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69.Rapid prototyping model
Now in the market the rapid prototyping model has accounted for the very heavy proportion, also integrates gradually to people's life and the work, has become people's indispensable helper.
Rapid prototyping model are a number of companiesbuy wow gold dealing .Rapid prototyping is the automatic construction of physical objects using additive manufacturing technology. The first techniques for rapid prototyping became available in the late 1980s and were used to produce models and prototype parts. Today, they are used for a much wider range of applications and are even used to manufacture production-quality parts in relatively small numbers. Some sculptors use the technology to produce complex shapes for fine arts exhibitions.
The use of additive manufacturing technology for rapid prototyping takes virtual designs from computer aided design (CAD) or animation modeling software, transforms them into thin, virtual, horizontal cross-sections and then creates successive layers until the model is complete. It is a WYSIWYG process where the virtual model and the physical model are almost identical.
Rapid prototyping is now entering the field of rapid manufacturing and it is believed by many experts that this is a "next level" technology.A large number of competing technologies are available in the marketplace. As all are additive technologies, their main differences are found in the way layers are built to create parts. Some are melting or softening material to produce the layers (SLS, FDM) where others are laying liquid materials thermosets that are cured with different technologies. In the case of lamination systems, thin layers are cut to shape and joined together.