Choose what kind of CNC machine depands on machining phone case's material, CNC machining usually use profiles and plates. Process phone case usually use plate, process plate requiry high stability machine.

Phone case is generally selected aluminum, aluminum rigid requirements are not very high, but the plate is still relatively high. Plate is the best use of BT40 machining center to process, so the role will be better and BT40 spindle cutting can be greater, but this has a lot to do with the program and tool. Phone case processing requiry high precision and finish, so can't choose 8000 RPM processing center, we need to buy 20000 rpm drilling center, because the size of the phone case is not very big, so we don't have to choose a large machining center to process, so choose a small drilling center so that more add cost. Also got good parts.