Rapid prototyping technology or RP refers to the automated construction of prototypes. Usually, the process involves, a computer aided design, which is fed into a machine, which is in turn transformed into a physical, 3D model through an automated mechanical process.
Although the term rapid is relative, the reason why the term is used in this process is because prior to this invention, prototypes were produced longer and with more difficulty. Not to mention that in the past, automated prototyping were limited to certain manufacturing industries. Now with rapid prototyping technology in place, a much wider application of the process is utilized, including the medical industry.
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Manufacturing technologies have advanced geometrically over the past twenty years. And rapid prototyping techniques have grown even faster. In all most every process that is used to make components, a complimentary process has been developed to make prototypes and short production runs.
Aluminum die casting has been the process of choice for the majority of high volume applications for decades. Volumes need to exceed 50,000 pieces per year. So what if you have a new product that you want to launch with 5,000 units and it involves several aluminum castings per product?
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Solid Freeform Fabrication or Rapid Prototyping has been around for quite a long time now. Many commercial companies offer various type of machines that can manufacture high precision parts out of both plastic or metal to exating tolerances. The downside, they cost anywhere between $15,000 and upwards of $90,000. Some machines can even run up to $500,000.
The Fabber is a joint project started in the Computational Synthesis Lab at Cornell by Dr. Hod Lipson. He initially visualized the Fabber as a tool to reproduce lost Lego pieces. It is a low cost reasonable detail sold freeform modelling or fabrication tool with a build volume of about 512 cubic inches. or an 8″ cube.
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