Offset Motor Mount (RigidBot)

Stepper motor mount for the RigidBot. It has the following changes from the original RigidBot design:
1 - It is offset by 6mm to line up with the idler bearing when used with a 16 tooth pulley.
2 - It is designed to use M4x25 socket cap screws and M4 nuts (since the motor mount threads on my RigidBot came stripped).
3 - It has two gaskets printed in NinjaFlex and/or Polyflex for sound dampening. The flat gasket is 1mm thick, but you can rescale it to whatever thickness you like.

Yo