Rapid Prototyping is a very popular process in the manufacturing, design, and medical industries. It help users to develop quick prototypes and obtain accurate feedback from their target audience.
The high demand for rapid prototyping services can be attributed to a number of factors. These services help in eliminating design flaws at the conceptualization stage itself. There are a number of devices that assist in rapid prototyping; 3D Printers being one of them.
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What is Stereolithography?
Stereolithography has many names and few of them are 3D layering, 3D printing, solid free-form fabrication, photo-solidification and solid imaging. It is the most common and extensively used form of rapid manufacturing and rapid prototyping. Stereolithography fabricates 3D parts and allows creating solid 3D objects from CAD models with high precision and excellent surface finish within few hours (time depends upon size and complexity). Machines used for Stereolithography are known as Stereolithography Apparatus (SLA).
Advantages and Disadvantages:
Stereolithography provides a quick and simple means to convert CAD models into real objects. This is very useful where time is money. The constraint as mentioned above is that the time to produce three dimensional parts depends upon the size and complexity of the object. The accuracy is very good having tolerance within .004″/inch. The problem again is that SLA devices or machines are too expensive. Photo-curable resin used in Stereolithography can cost as high as $800 per gallon. Then the process involved in SLA produces fumes due to which it requires a well ventilated environment
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Introduction to Rapid Prototyping
In research, development and study, prototypes play an important role. These developed prototypes help to do testing prior to production and help to pinpoint the possible problems that are occurring due to the design faults. Earlier generating a prototype model was extremely costly process and also time taking. But with the aid of Computer Numerically Controlled (CNC) Machining, the speed at which a prototype is developed has increased. With Rapid Prototyping, this time period has even decreased from few days to a few hours.
Rapid Prototyping is an additive manufacturing process that generates a model of an object directly from a CAD model by building it in layers. For this computerized equipment are used that builds a three-dimensional model of a casting from a CAD drawing.
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