NEMA 17 Base Support

This is a support component for NEMA 17 motors. I've designed this specifically for my Prusa i3 Rework build, but it's mostly parameterized, and hence can be remixed easily to fit other NEMA motors/dimensions.

The motors I'm using on my Prusa i3 Rework machine are a bit shorter than the standard ones, so they are left hanging on the frame. While this hasn't really caused any issues, the fact that they don't touch ground kept bothering me. I've designed this to address that issue.

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