Summary:Do you know how to choose the right CNC machining material?
CNC is a computer-controlled manufactur...
CNC is a computer-controlled manufacturing technology that predates 3D printing by about 30 years. Fast, accurate and versatile, it belongs in the advanced manufacturer's toolkit.
CNC Machining Material #1: Baltic Birch Plywood - Baltic Birch Plywood is great for CNC: it is a consistent, void-free, stable cabinet-grade plywood. It also has an attractive exposed edge. For more information, see Baltic Birch Plywood.
CNC Machining Material #2: Polycarbonate – Polycarbonate, also known as Lexan or Makrolon, is a high-strength, impact-resistant engineering-grade plastic that is a good match for CNC. Thicker materials are really expensive. If you can use 1/4-inch clear paper, it's a versatile material and a pleasant cut.
CNC Machining Material #3: Aluminum - Aluminum was the material they used to make their planes (until carbon fiber came along). Aluminum has an excellent strength-to-weight ratio and is much harder than plastic. Working with aluminum has its challenges, but opens a door to powerful, high-tech components, right from your CNC machine.
CNC Machining Material #4: Ultra High Molecular Weight Polyethylene (UHMW) – Ultra High Molecular Weight Polyethylene (UHMW) is like a poor man’s Teflon. In addition to having the same ultra-low coefficient of friction, ultra-high-power motors are stiff. UHMW has good elasticity, so it is not a precision material. However, if you need a part that is bulky, smooth, unbreakable, and non-hygroscopic, this is a good choice.
CNC Machining Material #5: Acetal – Also known as POM or Delrin, acetal is an excellent engineering-grade material with very similar properties to nylon. It does not absorb water and cuts like butter.