1. 钻孔
There are Half Ball but cut by the Cyliner Surface.
You could "Edit" --> Surface --> Untrim and your could find the Surface.
Create --> Surface Spline --> Edge
Create --> Arc --> From Spline
Create --> Point --> Center
2. 6mm球刀钻孔
看加工到多深, 用選鑽頭, 包含刀尖角深度, 真正加工時用球刀.. 另外, 用2 Axis Drill就可以, 一次做一排, 再用 Transform --> Indexd Array |