Auminum machining parts is made of different shape aluminum rods or tubes. The aluminum ros or tubes will be cut, machining, milling, drilling, and tapping on CNC machines. As the aluminum raw material is a easily machining material, the aluminum CNC machining part will have good surface finish after aluminum CNC machining. Normally, the surface roughness is Ra 1.6, Ra 0.8 or Ra 0.4 can reaches easily when using special CNC machining blade. Due to the material is soft and easily CNC machining, the small aluminum parts, whose diameter is smaller than 15mm, can be CNC turned by automatic centering CNC machine. CNC machined billet aluminum is usually a raw material for CNC milling service.