NEMA Mounting Holes

Makes cylinders in the positions and of the size that you need for mounting holes to attach a standard sized NEMA motor.

- NEW: Also optionally does a slotted version that allows motor adjustment.
- NEW: Customizer can show a fake base to preview the difference.
- NEW: Now works in customizer
- NEW: Also optionally provides a hole for the shaft.
- NEW: Also optionally provides a counter sunk hex nut shape.
- NEW: Also optionally provides a counter sunk area for the pilot - circle o