Drill gearbox mount

This part can be used as a more compact and convenient to mount option for drill gearboxes in DIY projects. It is designed around the generic 1:36 gearbox found in many cheap drills of various brands (for example Bosch PSR 960).
I´d recommend using the drill pattern as a template for making aluminium mounts for the motors due the heat created by the motors and shock loads in some applications.

Assembly:
You might have to grind off a little bit of the output shaft in order to fit the bearings onto them.
It is crucial that the ringgear interlocks with the holes in the 3d-printed housing. It will press further into those holes while tightening the screws.
The assembled gearbox should run smooth. If it doesn´t, check for misallignment, debris or such things.

Additional parts required:
-Donor drill
-12x19x5 ball bearing (2x)
-countersunk screw m5x50 and nuts (4x)

The shim pictured above is taken from the donor drill. The wheel pictured above is astandard foam wheel for 1/8th