... is made before mode-making on the basis of the appearance of the product or structure drawing, to detect whether ... ) Aluminum, copper, zinc,Brass, stainless steel,sheet metalFunctions of prototype(1) Inspecting layout Prototype is visible and tangible, which ... , blow molding, and various metal casting processes. **Key benefits of Stereo lithography Rapid Prototyping1)Time savings: it can fabricate your ...