Ender 3 X-axis stepper motor damper mount

thingiverse

I bought some stepper motor dampers for my Creality Ender 3 3D printer but they wouldn't fit because my stepper motors have press-fit pulleys (which are hard to (re)move). For the Y-axis, I recently made a spacer (https://www.thingiverse.com/thing:3245255) so the damper can be used without altering or vandalising the stepper motor in any way. I wanted a way to use a damper for the X-axis also, so I have adapted the original Ender 3 X-axis motor mount plate to accomodate for a damper without changing the location of the stepper-motor (and keep the pulley in the same place). To mount this thing to 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 have 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 2 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 mounting 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 ;-) )