The more complex the machined shape, the higher the machining cost, and the tighter the dimensional accuracy of the part, the higher the machining cost again. There are several points that can be taken into consideration to prevent cost increases.
1. hole machining, especially long hole machining and dimensional accuracy in the 1/100 mm range. Long hole processing requires the use of a special cutter, which may cause vibration of the cutter and melt the plastic processing if the hole is too deep.
2. If a corner part must be R or C-chamfered instead of thread chamfered (C0.5 or less), the machining cost will increase due to the additional process.
3. Curve machining using a ball end can be performed with CAD/CAM, but the machining time is longer, resulting in higher machining costs.