Used Macintosh Computers, Good Buy or Goodbye?

Because they've had other owners, used computers might be what you'd expect. Refurbished computers are much less than what they cost when they were new. Used computers are an excellent way to get a great PC at a reasonable price. Notice I didn't say top spec computer. It's unrealistic to expect to receive a top spec computer when you are paying the price of a used one. This spec machine delivers best service at best price.

As a note to people buying their first computers, used Macintosh computers are great choices for beginners.

Reputable online dealers use experienced and certified technicians to restore used Macintosh computers to perfect operating condition by thoroughly inspecting, repairing and/or cleaning. They will be guaranteed to work or your money back with at least a 30 days warranty. Often second-hand computers that are name brands come with a warranty of 3, 6 or as much as 12 months, so be sure to ask the salesperson.

A common misunderstanding by many people is that they think  a used computer will take too much effort to maintain. I can categorically state that the opposite scenario is the true one. You will usually find that many mechanical parts have been replaced with new or refurbished bits and that normally includes the keyboard and mouse. Often you'll find that buying a new PC is not more cost effective than replacing used computers. Remember that.

You can find great prices on used computers by searching the Internet. So many are available because companies frequently upgrade leased computers after only a year or two. So these barely used computers become available. It's a great situation for someone on a budget.

The difficulty in finding stores which sell used Macintosh computers or second hand computers is due to the fact that they often don't do repair work, nor offer decent warranties, which is why I don't recommend them. Mostly, personal advertisments are not that effective and are given a miss by people, I would do the same and the reason for this is be because these ads offer no warranty at all. Yes, I have been steering you to online dealers for that reason. They have a system in place to deal with the inspection, repair and cleaning of used computers as well as being able to offer you a warranty.

So if they don't have a guarantee, go somewhere else online. Oh yes, and check what you are buying. Be sure to read the contract to determine if a monitor and Windows are included. Make sure that you check because sometimes that isn't the case.

Bluetooth technology history

Bluetooth history

Bluetooth takes its name from a character in history called Harald Bluetooth. He was born in 910AD and the Bluetooth concept takes his name because in 940AD he had the ability to Unite two warring countries, Denmark and Norway. It was because of the uniting of two countries by Harald Bluetooth that the founders of Bluetooth technology took his name for the principle of uniting two components to work together remotely. The use of Bluetooth technology has the ability of linking the different technologies like , computers, mobile phones, printers, headsets etc.

The brainchild of providing a low power, low cost wireless interface was first inspired by Ericsson Mobile Communications. Starting in 1994 the probed ways of linking computers and mobile phones wirelessly. A group of like minded companies joined forces in 1998 to form and association called the Bluetooth Special Interest Group (SIG) in Lund Switzerland. Coming from different backgrounds the group included market leaders in laptop manufacturing, the cell phone industry and digital signal processing. These companies where Ericsson, IBM, Microsoft, Motorola, Nokia, Intel, Toshiba, and Agere. Today research and development into the Bluetooth technology is led by these companies.

Bluetooth specifications where developed by Jaap Haartsen and Sven Mattisson two employees of Ericsson Mobile Platforms. Enabling various components from different industries to Connect Bluetooth technology was developed in Scandanavia. Based on a frequency hopping spread spectrum it is a wireless technology that combines and simplifies multiple forms of communication into a common secure available radio signal.

The Bluetooth Special Interest Group made a firm commitment to have Bluetooth technology installed in various devices and by 2002 Bluetooth technology was installed in PC’s, notebooks, desktop computers and over 100 million mobile phones had the technology as well as millions of other communications devices.

What exactly is Bluetooth?

Operating on a short-range radio frequency it is a wireless communications network. When connected to various devices such as mobile phones and computers it provides a way of exchanging information as well and the Bluetooth technology can be used on any other apparatus that is provided with it’s built in features. Due to its very low power it is medically safe to use, the information it carries using short wave radio and narrow bandwidth know as ISM is scientifically sound and very secure.

To be able to connect to one another devices need to have Bluetooth profiles and need to be compatible with each other. Once the profiles are enabled you should be able to use such things as hands free headsets with mobile phones, and wireless networking and communications which use printers, keyboards and a mouse.

Versions of Bluetooth

Bluetooth has seen many improved qualities with many changes since version 1.Introduced in 1998 and like most other new technologies had many teething problems. The main problem being a lack of devices being able to communicate.

Version 1.1 was able to communicate properly and the great improvements made it truly operable.

Version 1.2 was in general a better all round product, with vast voice quality improvement, backward compatibility and overall had better all round benefits.

Version2.0 improved even more with features and quality and now version 3.0 has a Bluetooth master able to communicate with several devices, and at any given time, the slave can become the master. The master has the ability to switch between devices very fast.

Wi-Fi is another wireless operating system and although it has a superior operating range it uses a different technology. The Bluetooth advantage is in its costs, much cheaper than the more expensive hardware used by Wi-Fi. One big advantage Bluetooth has is its ease of setting it up between many devices, its better security and its automated system. Wi-Fi is more complicated to set up and needs to have devices configured to set up shared resources which are more for Ethernet networking. Wi-Fi is better suited for operating larger networks while Bluetooth has more power and better connections. 

Microsoft Windows XP with Service Pack 2 or higher is required to operate Bluetooth on a computer. If you run an Apple computer it has been supported by Bluetooth technology since 2002. Bluetooth instillation has been carried out on most computers but if not a device called a dongle can be used provided you have windows XP and service pack 2. The dongle device allows various devices to communicate with your computer.

Bluetooth is now the world wide wireless standard and has a bright future. In the future High quality audio and video data will have a much higher quality as Bluetooth improves and the alternative for transporting Bluetooth profile data is MAC PHY. Automatic configuration will be carried out by using Topology Management, and broadcast channelling, which will enable Bluetooth in other devises. The chain reaction is already in progress and as more components use Bluetooth technology, manufacturers of electronics will jump on the band wagon and become increasingly eager to make their products compatible. Bluetooth technology is here to stay.

CNC Milling Machine Parts and Components

CNC

When you are looking for CNC Mill machine parts and components there are a variety of places where you can find them. You can find a ton of information on the internet when you are researching in order to get the best price.

Depending on the type of CNC Mill machine you need the price can be steep but there are many small machines that can do the same job if you are looking at this as part of a small business or a hobby. Also, you can buy a machine to cut metal or wood, to do fancy scroll work or to do engraving on metals and other applications.

You can decide whether you will purchase a brand new machine or a used one. Most people do not suggest buying a used one because you aren't sure what you are getting but buying other types of machines like CNC routers seem to be a good idea because of the cost.

All CNC Milling machines contain the following parts:

§ Axis -- depending on the type of CNC milling machine it could have anywhere from one to six axis which will also determine the size and what it is supposed to do.

§ Column -- the column is what travels along an axis that holds the part that mills or cuts.

§ Control panel -- the part that holds the computer keyboard (sometimes small, other times large) where you program the G-Codes into the machine.

§ Cutting tool -- the cutting tool is attached to the column and is the part that actually cuts the piece in the way that the operator specifies.

§ Spindle -- the spindle holds the cutting tool in place.

Coolan Supply Tubes -- These tubes are very important because this coolant is what is needed to keep the metal cool while the cutting takes place.

§ Table -- the table is the area that the workpiece will be attached to either using a clamp or a vacuum. This is where the workpiece will sit while being milled.

There are several different types of CNC Mill machines that can be found and they are small or large depending on what they do. Here are a few:

Vertical CNC mills have a vertical spindle axis. This means that the cutters that do the milling are held vertically in the spindle and they rotate on the spindle's axis. In this type you can extend the spindle or the table to make drilling or plunge cuts. Bed mills and Turret mills fall into this category.
Horizontal CNC mills have the same type of table as vertical CNC mills but their cutters are mounted on an arbor that sits across the table horizontally.

Hobbyists will most likely use a box mill which is mounted to a bench and basically moves up and down. The mills that have an x and y table where the mill moves up and down the column is called a knee mill. It can be adjusted with what is called a vertically adjustable knee. Many larger industries use the C-Frame mill because it is the most conducive for larger work. They are only vertically mobile and it used a fixed spindle head for that movement.

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CNC Mill Basics and CNC Milling Machine

CNC

A machine tool that shapes metal and other types of solid materials is called a milling machine. A CNC milling machine does this automatically once a computer sets up the specifications for the machine, it uses a rotating cutter to work like a drill to cut the material.

There is a difference between a drill and a milling machine however. A milling machine will use a cutter that rotates around a spindle axis and the table by which the piece of work is attached. A drill only moves along an axis and can only drill in one direction. A milling machine can move sideways and in and out like a drill.

The CNC milling machine can be controlled evenly by what is put into the computer. Miling Machines can actually work in different ways as some milling machines the table moves around the cutter. CNC milling machines are digitally automated but other milling machines can be mechanically automated or operated manually.

A CNC Milling machine makes the operator's work easier because it can do a number of operations like panning, rebating, drilling, routing and more. Often a cutting fluid has to be used at the site of the cut because it needs to keep the metal cool and the cut lubricated; also it is used to move the sluice out of the way.

In CNC Milling you will have a block of material that will be cut through by a rotating tool attached to the machine. You can actually move the piece in three dimensions all together so that you get the cut and shape that you want.

An operator can produce many different shapes with a CNC milling machine. For instance, if you have a 2D shape with an intricate pattern you can program the machine to do this pattern and repeat it as needed. The machine will also do 3D shapes, do different types of punches and even use a laser (usually a CNC Plasma Cutter).

Most metals and hard plastics are the best materials to use with a CNC milling machine because they can withstand the rigors of how the machine cuts. Sometimes you will find that if you use softer materials they won't work under the pressure of the process.

The CNC Mill machine is best used when you need a short run of materials to be produced. This process also needs only a software program to do the tooling and some type of jig to hold the work down while it is being cut. The machine is programmed using G-Codes for more precision.

CNC Milling Machines today have gone from a single source where today there are build to do a variety of things. As an example, Datron Dynamics sells a CNC milling machine that does all of the milling needs but also does industrial engraving. This machine can engrave on most metals including
Aluminum, graphite and stainless steel, but it can also engrave on ceramics and plastics.

The CNC Milling machine is a versatile machine and it can create many different parts while saving the company and the operator time and money.

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What To Do Once You Have Wireless Internet Problems

After hours and hours spent reading every box in electronic departments of all the stores in town, you chose what you thought was the perfect wireless internet kit.  So after all your research, Why is your internet still not working?  Try not to stress, many wireless internet problems exist out there, but they are easy to solve.  This is good to know.  Surfing the world wide web is just a few clicks away.                                                                                              
The Right Hardware to Help With Your Wireless Internet Problems

Choosing your hardware carefully will minimize your wireless internet problems.  One of the first things you will be purchasing is a wireless router and a wireless network card.  Be sure these two items are compatible.  Remember the same brand names on products do not mean they will work together.  Read the box carefully, never guess, wireless internet problems can be avoided when installing if your hardware is compatible.If you have any questions, a shop assistant will be glad to answer any them for you.  Always check the return policy of the shop,if you are not 100 per cent confident in them shop some where else.   If in any doubt do get in touch with the manufacturerof the hardware to check on the compatibility before you start installation.  Yes, it is a lot of effort but this will save hours of stress in finding solutions to your wireless internet problems.If it is a hardware problem,it is unlikely it will ever work.              

Company Updates for Wireless Internet Problems

The prime step to troubleshooting any electrical problem, including your wireless internet problem, is to establish everything is correctly plugged-in.  Making sure all connections are tight and in the right sockets.  After this is done, you will need to check the indicator lights.   Watch for several minutes to see if there is any interruption in the lights, flickering lights can mean loss of your connections, this will make it impossible to enjoy a wireless internet experience.  Turn everything off then try turning on again.  Hopefully by simply rebooting the system this will fix your wireless internet problem.  If the lights continue to flicker, you will need to look for other answers.  One of the other things to check if your wireless internet problem continues is the router.  Firmware is built into them and often needs updating.  Try calling the manufacturers helpline and talk to a certified technician about the firmware updates and where to download them, this will often go some way to solving your wireless internet problems.  You usually can find instructions for a hard-wired internet connection on the manufacturers websites.  Every three months it is advisable to check for updates for your router’s firmware.This is one of the easiest wireless internet problem to solve.

The Modem Can Cause Wireless internet Problems

Even  when equipment is supplied by an internet contractor it can malfunction.  Don't get paranoid often equipment is faulty when it is new.  Most of us have experienced this problem with computer technology.  After trying everything in this article and you are still having wireless internet problems, the final step is to check with  your internet service provider.  On their end, they can check your modem connections.  They can give you an answer within minutes.  If the problem is the modem, they will replace it no questions asked.  Wireless internet problems are something internet providers deal with daily and they are willing to help you as it ensures that they keep your business.

Learn about Virtual Prototyping, Virtual Prototypes, and the Virtual Prototyping Techniques

Flexible Manufacturing

Virtual Rapid Prototype is basically as simulation based refinement of a component by using a function based simulation. The technology is rapidly gaining prominence as the practice of choice amongst engineers, thanks to its ability to immensely shorten cycles and aid faster product development. Other major reasons for rapid proliferation of the technology include the widespread availability of low-cost computers and analysis tools and the ability to integrate multi-physics simulations into a single environment. These days, computer simulations are increasingly used to calculate and evaluate the kinetic and geometric reactions of a system to various external factors. 

The fact that the results can be visualized in full 3D environment has further spurred the rise of this technology. This has finally set the stage for a brand new phase in product development; the engineer can now quantitatively assess the performance of a system by saving the expenses on the intermediate physical prototypes. Virtual Prototypes also permit a larger variety of tests to be carried out on the models, sans any risk of over-testing such as wearing out the component. There are much faster results that you can now produce if you are redesigning a product because of this technology. Virtual Prototypes also facilitate the involvement of non-engineering staff such as sales personnel and management very early in the development process. In this way virtual Rapid Prototype has gained acceptance as the weapon of choice for mechanical design system and is now widely used in sectors ranging from automotive, rail, aerospace to medical device designs.  There is significant shortage of individuals trained in the methodology which seems to be the biggest crisis the mechanical design industry is facing.    

Virtual Prototyping is the process of representing a 3D representation of your invention by the use of CAD softwares. Can you imagine that you will be giving your customer their finished prototype on the computer in a 3D image that they can look at from all angles in the comfort of their computer chair. Virtual Rapid Prototyping is probably the most convenient means of communication between a designer and his customers. No matter where you are, you can do business with anyone in just about any part of the globe. The unique interface allows you to examine the component almost as if you are looking at the physical self. The customer can easily gauge how the component is going to react to various situations. Not only can you sit at home and view your prototype, its also a lot cheeper than other versions of prototypes that were available to you before. Most manufacturers have started making the switch to virtual prototyping as it speeds up the whole process as parties can now send info via the internet, not to mention the money saved.Having said that, nothing beats the feeling of holding the component in the hand, to feel the constructions and check out whether it will work the way you want it to. Virtual prototypes are nonetheless making huge gains in the manufacturing sector

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A High-End GPS System – Garmin Nuvi 760

The Garmin Nuvi 760 GPS Navigation System is among the best tools available for navigations. The routes that are included in the Nuvi 760 cover all of North America so you are able to travel to the United States, Canada, or Mexico using your GPS system to aid you.

Features

The readout on the Garmin Nuvi 760 comes with a generous 3.8 by 2.25 screen that has a backlight and a no-glare screen. The display also has a great resolution of 480 by 272 pixels as well ass a 3-D image display.

Your Garmin 760 also includes an FM radio function to offer you a way to receive the most current real-time traffic reports that can help you avoid high-density traffic areas in the city. All of the data that you need to input on the unit is easily reached on the touch screen so the package is compact with sleek lines and a great ball socket installation.

You affix the Garmin Nuvi 760 to your windshield with a small suction cup that can be taken down with ease when you are ready to get out of your vehicle. The small dimensions are perfect when you do not want to leave the system behind; the navigator will effortlessly slide into a pocket or tote as you file papers or pick up groceries.

Extra Features

The Garmin Nuvi 760 Travel Assistant has the ability to remember the most frequently used routes. For example, if you visit hotels frequently, you can keep the hotel address in the unit and then you just have to key in your destination address to get the quickest and most advantageous plan.

You can also keep track of the names of your most-visited eateries and stores in the system to arrive at these places with no trouble in a strange city. This is a good feature when you want a certain product that is not offered in some towns.

The Nuvi 760 is also the prime device to use if you experience trouble finding where you have parked in a big city or parking garage. The unit will remember exactly where you parked by storing the final location that the unit remembers. This is a useful feature that is not included in the earlier Garmin Nuvi systems.

Adding Features and Maps

If the Garmin Nuvi 760 GPS Navigation System that you have right now needs to be updated, the only requirement is to visit the official website to download new maps and features onto the product. Some updates require a fee, including travel instructions and maps. You Nuvi 760 package will come with a USB cable so that you can easily attach your unit to your personal computer for downloads.

You will also have the option of selecting the look of the touch screen letters on your Nuvi 760. The majority of people are familiar with a regular keyboard and find it faster to utilize this style when putting in data.

Precise Cast Prototyping

rapid prototyping

Researchers have developed a new Prototyping technique that blends traditional casting methods with CNC milling which allows faster prototyping; the best thing is that it happens in a single machine. This technique become public when it was invented and named Precise Cast Prototyping by a group of researchers in Germany at the Institute for Material and Beam Technology. Half of the mold is machine using CNC machining, then silicon or polyurethane material is poured into fill half the mold, this will be the lower half to render the shape of one half of the part, while the part still in the CNC mill. When the material is cured and hardened, the upper side of the component is milled. The process is targeted at components with simple geometry such as housings whose one side can be fairly easily machined on aluminum or epoxy mold half and the other complicated half is on the opposite side where it can be milled into the soft plastic.

Cost Saving: The Prototyping technique is touted to be an enormously cost effective as only one half of the tool is made and that too for low pressure casting. There are no runners; gate, venting and parting lines to be taken care of and besides these can be manufactured by toolmakers with lesser experience. Another Rapid Prototyping advantage is that one half casting allows the air bubbles to escape freely; this translates into a more dense part and better surface finish. The casting can be machined again which is nice because then you can get some great features such as threads and undercuts worked into your design. The casting method shapes the outer surface of the component while precision CNC milling renders the inner contours. Whats nice about being able to mill these castings if that you can use the same mold for parts with totally different dimensions. This is because the second half of the mold exists only as a CAD/CAM model and tool path programming. Geometrical changes can be altered by just changing the parameters.

Time saving: Since the outer surface of the component are not machined the process saves a lot of time .Even with measured against vacuum casting, some of these prototypes will have inner dimensions with closer tolerances. The reason for this is that the finishing takes palce after the curing and shrinkage in conventional prototyping while in casting it’s done before the casting shrinks. CNC allows for achieving of tighter tolerances compared to casting technologies. Besides all the machining is done in a single setting so there is no chance of non-alignment of the outer and inner features. The PCPro technique manufactures a prototype in just 6 steps, while the vacuum method takes 15 steps. A potentially major application of PCPro is to make housings for cell phones and similar electronic products; this is because of the technique’s ability to deliver flawless, close tolerance free-form surfaces. The machine for the process is a blend of casting and milling machine and is designed and patented by Fraunhofer. However it has to be said that highly complex features are difficult to manufacture by this method.

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Prototype Injection Molding

prototyping

Approximately 30% of all plastic products in the world are produced by an injection molding Prototyping process. Within this another 30% are produced using a custom injection molding Prototyping technology. You can count many different steps in the injection process but a normal injection molding process usually has 6 steps. The first step is the clamping of the mould, the clamping unit makes for one of the three units of the molding machine. The other two being the injection unit and the mold, once the clamping unit holds on to the mold, the molten plastic is injected into the mold by the injection unit. The plastic is fed into a hopper and its fed in the form of very tiny pellets. What happens next is that these are put into a sylinder and in this cylinder is where they are heated until they melt and can be injected into the mold. The steps that follow are referred to as dwelling phase. Rapid Prototyping basically involves making sure all the cavities in the mold are fully filled. With the clamping still intact, the mold is then allowed to cool. Finally the mold is opened and the component is ejected out. The biggest advantage of plastic injection molding is the cost factor of the produced parts, especially when you need large number of parts.  The disadvantage is the cost of manufacturing the molds; a simple injection mold can cost you $3000 while the bigger complex ones can run into several hundreds of thousands.

Rapid Prototyping: Using a process called solid freeform fabrication, rapid prototyping does automated manufacturing of physical components. They are used in a wide range of applications, everything from medical to fine art. Rapid Prototyping machine works by taking virtual models from software and then converting it into extremely thin, horizontal cross-sections and then goes onto create each of the cross-section in physical space in a cyclic manner until the model is completed. Rapid Prototyping is a WYSIWYG process in which the virtual model bears identical resemblance to the finished physical model. Additional fabrications allows the machine to lay down layers of sheet, liquid or powder material and build up a series of cross-sections These layers are finally automatically fused together to render the final product. The main advantage of rapid prototyping is the ability to create any shape no matter how complex the geometry is. The commonly used data interface between the machine and the software is the STL format. It works by approximating the geometry of a part using triangular facets, smaller the facets higher will be the surface quality. The word “rapid” is used relative top conventional methods which take days to construct a model depending upon its complexity.  Rapid prototyping can create the model within a few hours, though it is highly dependent of the type of machines and the size of the model. There have been several new technologies available for rapid prototyping including Fused Deposition Modeling, Selective laser sintering, 3D printing, and Electron Beam Melting.  

Prototyping Injection Molding is a specialized method of combining traditional plastic injection molding. CAM software are able to combine rapid tooling and plastic injection molding  in order to quickly create small quantities of any thermoplastic part.

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DIY Rapid Prototype, 3D Printer and DIY Rapid Prototyping Information. Learn how to make a 3D Printer

prototyping

Several DIY Rapid Prototyping techniques have come up off late. Making a 3D printer at home can prove to be quite cost-effective. The other names for such sort of prototyping are fabbing, three-dimensional printing, reprapping, and fabrication. RepRap is one such 3D printer. Let its making be studied in detail.

RepRap: This is a commonly used term and you can tell that it meand Replication Rapid-Prototypes. In other words, it can be said to be a Practical Self-copying Printer. RepRap would make metal, ceramic, and plastic parts. It’s itself made up of plastic. This is done in order to facilitate the making of multiple copies of its own self. The final product can be described as a 3-axis robot moving numerous material extruders. Fine filaments are produced by these extruders. The filaments are made up of their own working materials. This process has a paste-like consistency.

If one intends making plastic cones, Rapid Prototype would make use of the plastic extruder for laying down a 0.5 mm quickly hardening filament made from molten plastic for drawing the filled-in disc. The Plastic Intrusion Head would then be raised and the layer following that would be drawn, exactly on the top of 1st. You will find this process repeating itself until finally the whole and complete cone is formed. If making an Inverted Cone is on the agenda, the same procedure is followed. The only difference would be laying down the support material beneath the parts that are overhanging. The removal of support would take place after the completion of cone. Intermixture of conductors with plastic is allowed. This can help in the formation of circuits.

The process described above is known as Prototyping . These machines, though useful, are not very much prevalent. If you can believe it, this software can work on almost any computer platform and it is free of cost.

Fabr: The Fabr makes use of parts which are commonly available. The other advantages include requirement of minimal fabrication of parts, high accuracy and availability of enough power for not only plastic, but also wood or metal.

The key components of Fabr include 80X20 extruded aluminium, fasteners and bars, drive and anti-backlash nuts, couplers, bearings, aluminium bars, screws, pulleys, timing belts, and ‘A Custom Stepper Motor Controller Board’. The learners are advised to use an Allegro 3967 Micro stepping Stepper Motor Controller. The board contains three drivers, and connectors to have end stops.

DIY 3D printer made from pure sugar: The objectives behind making the above-stated DIY 3D printer are cost-effective design using recycled components, huge printable volume emphasizing over better resolution, and ability of using low-cost print media inclusive of granulated sugar. The process of printing starts with the bed of granular print media which has low melting point. The printing media is fused selectively with a directed, narrow, low-velocity beam. This beam consists of hot air. The bed is then lowered by a diminutive amount. The bed’s top portion is then bombarded with a flat thin layer (of media). By this process, a 2D object is formed. If this process is repeated, 3D object is formed.

Prototype Zone is a new community website all about Rapid Prototyping. Visit the website today to sign up for free so you can then download your free book on Basic Rapid Prototyping today and join the site for free and you get a free Rapid Prototyping Basics EBook just for signing up! Visit the website today to sign up for free so you can then download your free book on Basic Rapid Prototyping.Com Today for your free Ebook on Rapid Prototyping.

Prototype Services, Rotocast, 3D Cad, and 3D Printing

rapid prototyping

Since Rapid Prototyping came into being, many businesses provided with the service of prototype development. Earlier, such companies were known as service bureaus and they allowed the users to access the unproven and expensive technology. In the early period of rapid prototyping, these service bureaus provided with advantages of Rapid Prototype development minus the soaring upfront expenses and major risks of applying a new technology that was relatively unverified and hovering on the brink of rapid obsolescence. In the beginning, the service bureaus provided file conversions for narrowing the operational gap amidst 2D data and 3D CAD models. Due to this, the large companies that had not yet transitioned to solid modeling were benefited greatly.  

As the technology of rapid prototyping progressed, most of the service bureaus have undergone role modifications and they promise to deliver greater advantages beyond initial expense reduction and ownership risk. There are several companies worldwide offering the rapid prototyping services.

Advantages of Rapid Prototype Services: The advantages of rapid prototyping services are by far many. The rapid prototyping services provide advanced rapid prototyping technologies. Getting your product to market faster than your competition is very important and this can help you do that. You can achieve your design and prototype goals using these variour rapid prototyping services. The innovative product idea can be successfully realized into actual product of high quality with the help of rapid prototyping services. The rapid prototyping services deliver the finished product beginning from the product idea, conceptualization and prototype development. You can save money and time as well, as rapid prototyping allows the production on low volume basis directly from the designing data.

Rapid Prototyping Services: The various types of rapid prototyping services include technologies like stereolithography prototype, polyjet 3D printing, selective laser sintering, rapid tooling, 3D CAD modeling, RTV molding, RotoCAST, machined castings, urethane castings, injection molding, high temperature castings, rapid prototyping machines, investment casting, electroplating, functional  prototype development, 3D modeling and development of patterns and models.

The rapid prototyping service provider will develop prototypes as per the required specifications of the manufactures. It supplies with prototype development along with prototype assemblies, materials and components. The various materials utilized in the process of rapid prototyping are plastics, metals and elastomers. The product development process is accelerated with supply of quick, robust and accurate prototypes by the rapid prototyping services.

Prototype Zone is a new community website all about Rapid Prototyping. Visit the website today to sign up for free so you can then download your free book on Basic Rapid Prototyping today and join the site for free and you get a free Rapid Prototyping Basics EBook just for signing up! Visit the website today to sign up for free so you can then download your free book on Basic Rapid Prototyping.Com right away to receive your own Ebook on Rapid Prototyping Basics for Free.

Selective Laser Sintering and SLS Information

Prototyping

Rapid Prototyping or SLS is said to be a free-form manufacturing technology which is developed by 3D systems. SLS is a method of layered manufacturing which creates a solid 3D object by blending powdered substances along with carbon dioxide. In other words SLS is one of the famous mechanisms of Rapid Prototyping in which a laser beam carefully sinters or fuses the powdered substances such as elastomer, nylon etc. A thin layer of that powdered substances is being laid down and the laser sketches on the layer sintering together the elements hit by the laser. SLS can provide a persons manufacturing company with most important perimeter by producing metal or rapid plastic prototyping which narrowly matches their molded complements.  
    
Stereolithography V/S Selective Laser Sintering: One of the foremost benefits of Selective Laser Sintering over Stereolithography is that it constructs prototypes in powered materials such as nylon etc. It is likely to create structurally useful parts like functioning springs, living hinges and snap fit components along with nylon substances by utilizing Selective Laser Sintering. This procedure is actually very easy as there is no need of tooling or molding involved. SLA nylon substances can be tapped, drilled, and machines just like the nylon substances in SLS. These substances are fragile as they are curved with Ultra Violet light and created with liquid photopolymers.  
 
Since it has been introduced by DR Carl Deckard in the year 1989, this SLS technology has become one of the most recognized and utilized procedures for product development and rapid prototyping in most of the manufacturing industries. Prototyping technology has also become one of the most trusted and reliable forms of rapid prototyping due to its structural importance. SLS is generally helpful when a particular design has to be customized or is complex and requires being short run or functional production. 

Procedure: In the procedure of Rapid Prototyping or Selective Laser Sintering, three dimensional parts are formed when an infrared laser beam fuses or sinters powdered substances. The ultimate object is being formed by continually sintering or fusing those thin layers by utilizing the infrared laser beam. This particular procedure is also known as additive manufacturing, creating parts which regularly enhances in size until it reaches the arranged size. These rapid prototypes are formed directly from the STL file acquired from three dimensional CAD models.

One of the most important features of Selective Laser Sintering is how functional and durable the substances are. These substances normally include versions of new DuraForm glass-filled, which is a nylon based substance that creates functional and highly durable plastic prototypes. LaserForm, Flex Plastic, and Rubber like parts that create metal prototypes are some of the other substances available with SLS.    

Benefits: Developments and research has been making progress in order to bring innovative SLS substances to the manufacturing market. Whats nice about thses substances is that after they are created, they need no post processing methods so you get another advantage over SLA. However, this does not mean that these substances cannot be developed. All these SLS substances can be completed in many methods. They can be machined, painted, tapped, drilled and even plated. This allows for a superior grade of manifestation to these substances therefore giving the users a limitless potential to utilize these substances.

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Learn about Reverse Engineering

Prototype

Reverse Engineering can be defined as the process wherein a device’s, object’s, or system’s technological principles are discovered by analyzing its operation, function, and structure. It often refers to detaching something, say- a software program, electronic equipment, or mechanical device and carrying out the analysis of its workability in detail. This is done in order to manufacture a new program or device which performs the same function without doubling anything from original.

Motivation: Reasons behind the emergence of reverse engineering include interoperability, lost documentation which means loss or non-existence of documentation of the concerned device, product analysis, security auditing, exclusion of protection of copy, circumvention of restrictions regarding access, and fraud.

Reverse Engineering of ‘mechanical devices’ : With the ever-increasing popularity of CAD, ‘reverse engineering’ has proven to be a blessing for creation of ‘3D virtual model’ of the on hand physical part to be used in 3D CAE, CAM, CAD and many other soft wares. The measuring of physical object can be done by making use of ‘#D scanning technologies’ such as computed tomography, ‘structured light digitizers’, laser scanners, and CMMs. The data that is measured usually gets represented as ‘point cloud’. It is devoid of topological information. That’s why, the processing and modelling takes place into usable format like a ‘triangular faced mesh’, CAD model, or a collection of surfaces of NURBS. Applications such as Polyworks, Image ware, Geomagic, or Rapidform are used for processing the ‘point clouds’ into the formats that can be used in applications like 3D CAE, CAM, CAD or visualization.

Rapid Prototyping of ‘software’  : The term ‘reverse engineering’ differs from person to person when applied in terms of software. Looking to the research of others, reverse engineering is the process that lookes at a current product and trys to create it at a higher level. This level might be called the ‘level of abstraction’. As far as software is concerned, reverse engineering can be described as an examination process only. Sometimes you may think there are modifications needed on software but in reality there is not. The use of ‘software anti-tamper technology’ takes place in order to deter reengineering and reverse engineering of the software-powered systems and proprietary software.

Two major reverse engineering types exist in the present scenario. In the first type, source code is available, but program’s greater level aspects are poorly documented or invalidated. There is no source code in the second type. Any efforts made in this direction would be termed as ‘reverse engineering’. The 2nd use is that which majority of people know. ‘Reverse Engineering of software’ is implied at making use of ‘clean room design’ technique for avoiding infringing copyrights. In today’s world, around 95% of reverse engineering consists of ‘reverse engineering of software’.

On the other hand, ‘black box testing’ in ‘software engineering’ has many similarities to reverse engineering. The tester normally possesses the API. However, their main goal is to locate undocumented features and bugs by smashing the products from the outside. This process is used for customizing the embedded systems as well. 

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3D Printer Information and 3D Prints along with 3D Printer Technologies

3D Rapid Prototyping

3D Printing can be referred to as method of getting virtual 3D model printed onto a 2D object. Rapid Prototyping falls in the category of ‘rapid prototyping’ technology. The function typically performed by 3D printers is that of printing consecutive layers on the previous ones for building up a 3D object. It is easier, more affordable, and faster to use 3D printers as compared to other technologies related to additive fabrication.

Technologies: Initially, production of a prototype required a lot of man-hours, tools, and experienced labor. For instance, after designing a novel Street Light Luminaire digitally, drawings used to be sent to accomplished craftsmen where the paper design used to be followed with utmost pains and a Rapid Prototyping used to be formed in wood through the utilization of the entire shop that is full of costly tools and working machinery. One can easily make out that this process consumed a lot of time. Moreover, the skillful labor was not all that cheap. These shortcomings necessitated the need of rapid prototyping.

3D printing has a variation called Inkjet Printing System. It involves binding of fine powder layers (resins, cornstarch, or plaster) by the way of printing a gum from inkjet print head as per the shape of every cross-section as spotted by the CAD file. This is the only technology allowing full color prototypes to be printed. It is believed to be the quickest method.

These machines, alternately, are what feed the liquids. Photopolymer is one of such kind. These machines make use of UV (ultraviolet) flood lamp. It is mounted in print head for curing each layer on its deposition. A new technology called Fused Deposition Modeling uses a nozzle to deposit molten polymer layer by layer to the supported structure. The other approach is Selective Fusing of Print Media in the granular bed. Here, the media that has been unfused supports thin walls and overhangs in the piece which is being produced, thereby reducing need for temporary auxiliary supports for the work piece.

Ultimately, 3D Micro fabrication technique having a photo polymerization of 2-photons might be used to make ultra small features. Here, the preferred 3D object gets traced out by a completely focused laser in a gel block. The curing of gel into a solid takes place only in places where laser had been focused, owing to photo excitation’s non-linear nature. The gel that is left out gets washed away.

Resolution: Resolution is measured in terms of layer thickness. The X-Y resolution is given in dpi. 100 microns is the characteristic layer thickness. The X-Y resolution is compatible with laser printers. Diameter of the particles, i.e. You can assume that 3D dots is around 50-100 microns.

Applications: Standard applications are inclusive of design visualization, metal casting, CAD/prototyping, architecture, geospatial, education, healthcare, retail/entertainment, etc. Off late, 3D printing technology is being used in artistic expressions. Its biotechnological applications include bio-printing, computer-aided Tissue engineering, and organ printing.

Self-replication: The main purpose behind using 3D printing technology is its ability to replicate itself. RepRap is one such printer. It has the ability to print plastic parts and circuit boards. In the future, there are those who think that it will print metals as well.

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Techniques for Rapid Manufacturing

Flexible Manufacturing

Prototyping can be described as an ‘Additive Fabrication Technique’ to manufacture solid objects through the chronological delivery of material and/or energy to precise points in the space for producing that part. At present, the practice of controlling the process of manufacturing with the help of computer by making use of mathematical model that has been created through the computer’s aid is being followed. Rapid manufacturing, if done with the help of Parallel Batch Production is capable of providing a huge advantage in terms of cost and speed in comparison with alternative techniques of manufacturing like die casting or Plastic Injection Molding.

Origin: Rapid Prototyping process was first demonstrated at The AUTO FACT show. The venue was Detroit, MI. The year was 1987. A company called 3D Systems Company is who created this technique. The technologies available now are inclusive of processes such as Laminated Object Manufacturing, Shape Deposition Manufacturing, and Selective Laser Sintering. 

The present scenario: Rapid Prototyping might involve replacement parts, custom parts, series production, or Short Run Production. This process can be referred to as Rapid Prototyping only if the use of the part is for development. Rapid Manufacturing carried out for big products with Layer-based Manufacturing from composite materials, plastics, or metals is widely used for numerous industrial applications pertaining to aerospace (Boeing) and military (MPH-Optomec) sectors. Micro system applications and small products are well known in medicines, sensor technologies (micro TEC), and diagnostics. Batch production regarding tiny parts by techniques of rapid manufacturing like RMPD give vent to advantages related to time and cost.

Now days, collectibles, consumer products, orthodontics, dentistry, jewelry, motor sports, and automotives are being experimented with rapid manufacturing. Amazing results are expected in future. The world economy is becoming competitive day by day. Manufacturers are facing the challenge to deliver novel customized products faster than before for meeting customer demands. A late delivery or development might could mean failure of business. Rapid manufacturing has been devised with the objective of shortening the production cycle and design, and promising to revolutionize the age-old manufacturing procedures.

The initial process: Before starting with the construction of product, a prototype or sample is required quite often as a portion of design cycle, for allowing evaluation, testing, or demonstration of proposed product. This process is iterative, as a chain of prototypes gets built up. One way that prototypes can be used is for testing and loking at various options.

Rapid Manufacturing is also inclusive of rapid application of tools needed for production on a large scale, like jigs, dies, and specially shaped molds. Several Layer manufacturing Processes are being developed now, by making use of a wide range of materials. These parts are extremely durable and have proved to be strong as well. The size has also been increasing. Due to all these successes, layer manufacturing is the most sought after technique for fabricating the parts for functional prototypes as well as production tools. The process of applying layer manufacturing for making components utilized in production can be called Rapid Tooling. It is being applied to investment casting, injection molding, and many processes related to mold casting.

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3D Printer and 3D Printer Rapid Prototyping

Prototype Development

In the Prototyping available in the market these days, generation of output takes place from programs of mapping which support 3D modelling programs or 3D CAD programs. Some companies have their own soft wares for PLY, VRML, and STK formats to allow 3D viewing, scaling and labeling of text, and fine-tuning preceding printing.

Working: All the 3D Printing posses five basic process functions for creating a three-dimensional model.

First - The surface on which the printing will take place gets fed with a special powder.

Second - The powder is spread on print surface by a roller at a preset depth. This process takes just a few seconds for its completion.

Third - Color is applied to the powder’s initial layer by the Standard Inkjet Print Heads.

Fourth - The solidification of powdered layer takes place.

Fifth - The lowering of print surface for powder’s another layer is enabled.

This process goes on repeating till the completion of the whole 3D model occurs. Mixing the powder and the color of the ink is what you will see that allows a bond to form. The solidification occurs this way. So, if no printing is carried out at the specified layer or location, the powder retains its state, i.e. it does not get solidified. Once the printing process comes to a halt, the powder gets blown out, thereby leaving the output which is the reflection of the original model or drawing. Its the output and complexity that really determine the timeframe but you can estimate about 30 minutes. These 3D printers do a commendable job, especially when pre-production examples or working prototypes of the specified objects are seen on the computer monitor.

Self-replicating 3D printers: The ‘self-replicating rapid prototype’, better known as RepRap is believed to lessen the price of three-dimensional printers, thereby paving way for the future where spare parts and broken objects are just re-printed on a homely basis. There would also be a way out for creation of unique and novel objects.

At present, 3D Printing of the above type cost around $25000. They are still to capture the domestic market. They are instead being used by the industry for developing parts for machines like aircraft engines, hearing aids, and spaceships.

Plummeting Prices: Adrian Bowyer has strongly believed the prices of self-replicating 3D printers to lower to around $500, as no cost other than that of raw materials would be involved. He has further stated that these machines would turn out to be more competent and build up new capabilities. Once the soft ware guiding the process of self-replication becomes available, it would be there at the free service of the customers. This has also been said by Adrian Bowyer.

Tepid Metal: Circuits are normally built by 3D printers by carrying out the fusion of powdered metal and laser. However, the self-replicating 3D printers are aimed at use of metallic alloy of cadmium, tin, lead, and bismuth that have a low-melting point and squirting them to have the circuits formed from a syringe that is thoroughly heated. It’s not compulsory for the machine to be capable to assemble itself. Just production of all those parts that are very necessary excluding the lubricating grease and microprocessors is required.

 
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Learn about Global Prototyping

Prototype Development

Global Sources Group: There are very few companies dealing with Rapid Prototyping overseas. One of them is Global Sources Group. It can boast of offering overseas rapid manufacturing. Today’s fast world speaks of competition. The US is no exception. It has been ruling the world since the last century on this count. This has led to the emergence of Global Sources Group. The customer would always feel obliged by seeking the services of Global Sources Group, as this would result in substantial increase in his productivity and profit. This company is associated with factories across Vietnam and China. Thus, the required competitive edge that is needed in market of today is ensured.

Global Sources Group has the ability of designing the 3D Prototyping within 10 days. Not only that, the patent of the new product acquired can be obtained within 4 weeks. Here, time is equated with money. Hence, the new product would be air freighted to the topmost overseas factory to have the quality and fast productivity maintained. This would thus take the client to the subsequent level.

Global Sources Group assists companies in 3D Prototyping , right from design to manufacture. It specializes in manufacturing and ‘Art to Part Design’. You will find that this company has over 20 years of experience.

Delcam: Another company dealing with rapid prototyping overseas is Delcam. This company was established in 1968, when 3D modelling was not even talked of. 2D drawing was prevalent. Then in late 1980s, rapid prototyping was born due to the efforts of Ford. The process can be described as follows: Rapid Prototyping can be made effective if a good quality STL FILE is used. It is independent of composition. STL file, having property of water tightness can be exported by Power SHAPE. The errors can be automatically detected and repaired by a set of ‘wizards’. It provides the customer with total control over the creation of mesh. What helps to carry out the repair of tools is the fast model from PowerSHAPE with is very intuitive. This means that if the surfaces of original model of CAD are damaged or missing, the work won’t be stopped, i.e. the customer can easily carry out the fixation of model and go on with his work.

CopyCAD, Delcam’s software for reverse engineering, possesses comprehensive tools to repair and modify the STL models on an interactive basis. This enables the process chain to continue in an unbroken manner even if there is no CAD model to start with. Power MILL, Delcam’s absolute machining solution has the capacity of producing accurate tool paths. They can be built upto five axis-simultaneous, directly from the STL models. This causes the manufacturing process to become more flexible.

Delcam’s software is being tried and examined with majority of general Rapid Prototyping Systems, to produce both, prototype tooling and form-and-fit testing parts. Its constant involvement in projects of Europe like HiperMoulding and CARP ensures that the customer is guaranteed of results of high quality irrespective of the type of Rapid Prototyping System used. Delcam has been into news in terms of rapid prototyping for quite some time now.

 
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Learning about Prototype Development

Prototyping

Designing and Prototyping have revolutionized the manufacturing processes in all industries nearly. There is not a single industry or process that is untouched by the technology of designing and prototyping.

Designing: As you can imagine, this is where the product is designed before its even close to production. Designing will help you to innovate, change, modify and invent. Designing involves the process of idea generation, conceptualizing and actual design development.

Prototyping: Prototyping is a process in which a working model or prototype is developed for the purpose of testing the various design aspects like features, ideas, viability, functionality, output and performance. The prototyping will help in getting a quick user feedback. Prototyping is considered to be an essential element of the process of system designing.

Designing and Prototyping go hand in hand, as both are complementary. In prototyping, new prototypes are developed on the basis of the performance of earlier designs. The deficiencies or problems in the previous designs can be detected and corrected. The prototype is redesigned after refinement and successfully meets the designing goals like functionality, manufacturability, performance and robustness. After this, the product can be readily produced.

Benefits of Designing and Prototype Design : The scope of designing and prototyping is unlimited. Both have applications in all types of industries like CAD, CAM, automotive industry, workshops, fashion designing and innovative products and so on. With designing, you are able to create digital data in the form of 3D images and this digital data can be transformed into actual physical object by way of prototyping. You can visualize about how the final product will look. If you are one with lots of ideas and inventions, rapid prototyping can help these ideas come alive in a realitively easy way.

You may be toying with many innovative product ideas in your mind and you wish to convert them into realities. You can successfully develop your new invention from an idea to actual manufactured product with designing and prototyping. You can test your product by testing its commercial viability. You can have an open communication with the user regarding the expectations of the product and its performance. This will give you a fair idea regarding the designing and prototyping.

Appropriate Designing and Prototyping: If you want your invention or innovative product to be successful, then it needs to have a good design and there have to more additives than a plain good idea. The design should be such that it reduces the manufacturing costs. The design must have excellent functionality and it should be attractive as well along with the benefit of maximized durability. The designing and prototyping should work together to maximize the chances of success.

The best approach for an appropriate designing and prototyping plan, would be to design and create an eye-catching and working prototype along with good packaging. Necessary legal protection should be obtained. Engineering drawings should be produced and pricing data for manufacturing process should be generated. All the production facilities of the factory should be lined up. Take feedback from the end users and buyers and you will get an idea of the demand for your product. With this particular prototyping plan you will be set up to succeed rather than fail.

 
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Rapid Manufacturing, Additive Fabrication, and Rapid Prototyping

rapid prototyping

Additive Fabrication can be defined as an assortment of techniques of making solid objects through the chronological delivery of material and/or energy to specific points in the space for production of that solid. Additive fabrication is also known as solid freeform fabrication, layered manufacturing, rapid manufacturing, and rapid prototyping.

Techniques: Additive fabrication is carried out using a number of techniques. Let some of them be studied in detail.

‘Electron Beam Melting’: EBM (Electronic Beam Melting) can be described as the ‘rapid prototyping’ for metals. It is better known as Rapid Prototyping method. The parts are manufactured by having the metal powder melted layer by layer through a beam of electron in high vacuum. Whats nice is that the parts that are produces have solidity, are void-free, and have plenty of strength. The electrons have a very high speed; around 5 to 8 times the light speed. The bombardment of these electrons takes place on the work material’s surface. This generates heat which is enough for melting the part’s surface and causing it to vaporize locally. Vacuum is required for the operation of EBM. This means that the size of work piece is directly proportional to vacuum used. You will find that this technique works not only on metals but also on composites, ceramics, and non-metals.

Fused Deposition Modeling: Fused Deposition Modeling (FDM) can be described as a kind of rapid manufacturing (RP) or rapid prototyping technology which is generally used in engineering design. S.Scott Crump had founded this technology in 1980s. It caught the commercial market in 1990. Like most of the RP processes, the principle of working of FDM is the ‘additive principle’. You will find that the material needs to be laid down in layers. The metal wire or plastic filament is then unwound and material is supplied through it to the extrusion nozzle that can turn off and on the flow.

The nozzle’ then is heated for melting the material. It could be moved in vertical and horizontal directions with the help of a mechanism which is numerically controlled. This numerical control is obtained through ‘Computer Aided Design’ software package. Like stereo lithography, the building of the model takes place from layers. This happens because the material starts hardening after getting extruded from nozzle.

Numerous materials are offered with diverse trade-offs between temperature and strength. One can use the Rapid Prototyping with polycaprolactone, polycarbonates, polyphenylsulfones, and Acrylonitrile butadiene styrene (ABS). Temporary supports can be made by using a ‘water-soluble’ material. While the manufacturing is still progressing you really need to keep these supports. The commercial applications include making prototypes of servo or stepper motors.

‘Selective Laser Sintering’: Selective Laser Sintering can be defined as an additive type of rapid manufacturing wherein a ‘high power laser’ (like carbon dioxide laser) is used for fusing tiny particles of ceramic, metal, or plastic powders into mass representing the desired three-dimensional object. In comparison to other methods of rapid manufacturing, ‘selective laser sintering’ has the capacity of producing parts from several powder materials available. They include polymers (polystyrene and nylon), metals (composites, alloy mixtures, titanium, steel), and not to forget- green sand. This physical process could be liquid-phase sintering, partial melting, or full melting. 

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How do Invention Prototypes Work

Prototypes

Invention Prototype cannot be ignored because they sought to prove the concept of the inventor to potential customers, suppliers, and investors-and most importantly, to the inventor himself. This has been the opinion of majority of experts. The idea behind creating a prototype is the accomplishment of a lot from the point of view of creativity, that too without having to put on so much of money in the idea of product or going for its commitment early on.

Construction of an ‘invention prototype’ at the appropriate time: It’s essential to construct an ‘invention prototype’ much before buying the tooling for building the product or seeking contract manufacturers. Sometimes prototypes are done even before too much time is spent on computer drawings just to see the prototype and get a better idea of the invention. He is likely to burn up loads of cash on ‘engineering drawings’ when possibly what he needs 1st is the papier-mache clearly showing him what is being tried by him. Really in this case, you would want to advise him to go and use some computer aided drawings. Assessing the proper time for prototype is not all that tough. It just requires a proof of workability of the product invented by the concerned person.

The proper Prototyping for proper audience: An ‘invention prototype’ should be aimed towards the proper audience for doing its job. It means that the tailoring should be done in such a way that the requirements of the customers get fulfilled much to their satisfaction. Not only that, the prototype should be able to bear the critics of potential partners, investors, suppliers, and customers. Its important that you take the time to make actual real apprasials and not just a friend who give you an appraisals. The more slicker looking and operable the prototype, the ‘better’. Its always important to not let all of the praises go to your head. It’s better to spend less on this production, as there would be many other places for spending the start up capital.

Let >1 prototype be made

If the overheads are not very much, let the Prototyping be made into multiple versions. In the next few desings you will see that the creator will improve the designs. Due to this, the latest product arrived at would fetch more money owing to its modern and sharp design. Some people also have the habit of making two prototypes at a time. The first one would be meant for ‘show’ and the second one for ‘go’, i.e. the 1st one could be made to look like the end product and the 2nd one for demonstrating the functionality.

For instance- Battery Buddy had a ‘looks-like’ and ‘works-like’ prototype. The 1st one was created at ‘University of Michigan’. A box was fashioned to proper exterior dimensions as per the engineering drawings. It was painted with fancy, fine graphics. This version could fit on around 90% of vehicles in market. The 2nd one consisted of a plastic box. It was grey-colored and around 4 times bigger than actual Battery Buddy. Finishing was not the issue then. The workability had to be checked; and it happened! Hence, the two versions made the task simpler from the buyer’s as well as seller’s point of view. 

 
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Prototyping Disadvantages and Prototype Manufacturing Information

Rapid Prototyping

Invention Prototype is a process wherein a working model or prototype is developed for the purpose of testing the various product features like design, ideas, features, functionality, performance and output. This process of development of working model is quite quick. Early Feedback is one thing that the user can give towards the prototype. Rapid prototyping is, generally, a significant and essential part of the system designing process and it is believed to decrease the project cost and risk.

The prototype that is developed by the process of rapid prototyping is based on the performance of earlier designs. Hence, it is possible to correct the defects or problems in the design by taking corrective measures. The product can only be produced when the prototype is carefully checked over and looked at to be sure it meets all of the final design requirements. There are many advantages of rapid prototyping.

Rapid Prototyping –Advantages in brief: Rapid prototyping has manifold advantages. It can provide with concept proof that would be required for attracting funds. The prototype gives the user a fair idea about the final look of the product. Rapid prototyping can enhance the early visibility. Design Flaws that are noticed early in the state is really where rapid prototyping shines. You really want to see a lot of participation with the user and producer in order to make the most out of rapid prototyping. As the development costs are reduced, rapid prototyping proves to be cost effective. A higher output is what the user can get.

The deficiencies in the earlier prototypes can be detected and rectified in time. The speed of  system development is increased. It is possible to get immediate feedback from the user. There is better communication between the user and designer as the requirement sand expectations are expressed in the beginning itself. High quality product is easily delivered by way of rapid prototyping. Prototyping enables development time and costs. There are many innovative ways in which rapid prototyping can be used.

Despite all these benefits, there are many people who believe that there are many disadvantages of rapid prototyping.

Disadvantages of Prototyping : Some people are of the opinion that rapid prototyping is not effective because, in actual, it fails in replication of the real product or system. It could so happen that some important developmental steps could be omitted to get a quick and cheap working model. This can be one of the greatest disadvantages of rapid prototyping. Another disadvantage of rapid prototyping is one in which many problems are overlooked resulting in endless rectifications and revisions. The best solution in a large sized application may not be the best situation possible for rapid prototyping.

The user may have very high expectations about the prototype’s performance and the designer is unable to deliver these. The system could be left unfinished due to various reasons or the system may be implemented before it is completely ready. The producer may produce an inadequate system that is unable to meet the overall demands of the organization. Too much involvement of the user might hamper the optimization of the program. You may see some legal involvement because the manufacturer can get too involved with the rapid prototyping program.

The cost reduction benefit of rapid prototyping also seems to be debatable, as sufficient details regarding the calculation basis and assumptions are not substantial.

 
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