drawing_machine_y_end2_stable_compat

As the title says, it's an alternative for the Y2 endstop (servo mount).

It is similar to https://www.thingiverse.com/thing:1658267 , but the holes differ a bit, it's possible to sink a screw head at the top.

Example 'sandwich' above is layered as follows:

- M3 x 30 screw
- This Part
- Washer
- Bearing
- Washer
- Bearing
- Washer
- M3 Locknut