FABRICATION:

1.) Drill all the way through to the center of the part and tap on center with a #6-32 thread.

NOTE: Use of the center drill bit here on the curved surface is useful to get the hole started.

2.) The center hole is a clearance hole cut by the Lasercamm for the metal shaft. No actions should be needed.

3.) These are clearance holes cut for a #4-40 screw by the Lasercamm. No actions should be needed.