Get a piece of 2" square or 2" x 1.5" aluminum tubing. Drill holes for the motor shaft and mounting screws. Drill holes in the side or bottom for mounting the mount on the t-slot. No fancy tools needed, motor will be electrically grounded (assuming you ground the printer's frame- and you should), aluminum mount will carry heat out of motor, it won't flex when you apply belt tension, it won't creep or distort over time.
You can cut aluminum tubing with a hack saw and drill it with any drill. The NEMA-17 motor has a 22 mm diameter bump (not sure what the technical name for that is, maybe a boss?), so use a 7/8" or 1" drill to make that hole. If you use standoffs between the motor and the aluminum tube you can just drill a 1/4" hole for the motor shaft, but then you lose most of the heat transfer via the mount.
In the picture below, the tool access holes for mounting the motor also serve as holes to mount the mount on the printer. You can mount the mount on either side or the bottom just by drilling the necessary holes.
![06250003.jpg]( "06250003.jpg")
![alpha%20motor%20mount%20topside.jpg]( "alpha%20motor%20mount%20topside.jpg")
And then you can print some nice covers:
![A%20motor%20mount%20cover.jpg]( "A%20motor%20mount%20cover.jpg")
You can cut aluminum tubing with a hack saw and drill it with any drill. The NEMA-17 motor has a 22 mm diameter bump (not sure what the technical name for that is, maybe a boss?), so use a 7/8" or 1" drill to make that hole. If you use standoffs between the motor and the aluminum tube you can just drill a 1/4" hole for the motor shaft, but then you lose most of the heat transfer via the mount.
In the picture below, the tool access holes for mounting the motor also serve as holes to mount the mount on the printer. You can mount the mount on either side or the bottom just by drilling the necessary holes.
And then you can print some nice covers:
