... sample is made before mode-making on the basis of the appearance of the product or structure drawing, to detect whether the ... , Nylon3) Aluminum, copper, zinc,Brass, stainless steel,sheet metalFunctions of prototype(1) Inspecting layout Prototype is visible and tangible, which ... sintering service bureau. An advantage to using SLS is the range of materials that can be used, including nylon, metals, and ...