FABRICATION:
1.) The center hole should be a clearance hole, cut by the Lasercamm, for the long shaft. No actions should be needed.

NOTE: If the long shaft does not fit in the center hole use a 1/4" drill bit to make the hole larger.

2.) These holes should be tapped holes, cut by the Lasercamm, ready for tapping. Tap with #4-40 threads, both places.