... , within just 3--4 dyas, craft highly accurate and realistic CNC prototype for you basing on your detailed specifications. What ... sample is made before mode-making on the basis of the appearance of the product or structure drawing, to detect whether ... , Nylon3) Aluminum, copper, zinc,Brass, stainless steel,sheet metalFunctions of prototype(1) Inspecting layout Prototype is visible and tangible, which ...