Motor Mount Drilling Jig and Center Marker

Marking the correct home position for a polargraph is mendatory.
This jig helps to trace the center of a Nema 17 motor shaft horizontally and vertically.

This is a single jig for left and right.
Just mark the holes and lines with L and R like in the picture to not confuse when tracing.

I have attached the STEP file. It's pretty messy.