Ender 3 X-axis stepper motor damper mount

thingiverse

I bought stepper motor dampers for my Creality Ender 3 3D printer but they didn't fit because my stepper motors have press-fit pulleys which are hard to remove. For the Y-axis I made a spacer so the damper can be used without altering or vandalizing the stepper motor in any way. I wanted a way to use a damper for the X-axis also, so I adapted the original Ender 3 X-axis motor mount plate to accommodate a damper without changing the location of the stepper motor and keeping the pulley in the same place. To install this on your Ender 3 printer you need to replace the original x-axis motor mount plate with this one, and also replace the x-axis endstop cover with the one I designed. You could use the original endstop cover but you need to use a spacer and longer screws so the endstop is in exactly the right position again. (Or take a saw and shorten the original cover and screws by 6mm.) I reused most stock parts, but you are left with two long stepper motor bolts which need to be replaced by two really short M3 screws to mount the damper to the stepper motor. Make sure that after installing it, the belt is still centered and please check belt tension. Also very important: you need to have dampers with the correct hole diameter so they fit over your pulley (see pictures for correct model). The first ones I received had a 14mm hole which was too small. The second set I received has a 17mm hole and fits perfectly. If you have the wrong dampers you have to remove the pulleys (and if you could do that, you wouldn't need this fix at all.)