Ender 3 X belt tensioner
Description
This is a tensioner for the X belt on the Ender 3. You will need a 5mm x 19mm shaft for this, you could use a M5 screw with the head cut off if you don't have anything else. Put the adapter in the bearings, place bearings in slider, push in the shaft then slide the assembly in to the housing. Print in the orientation according to the pictures above. No supports needed. 2021-03-01 Added "X_Nut v2" which has a little bit looser tolerances. 2021-03-04 Added "X_Housing v2" with a little bit larger tolerances for the slider. Also added "X_Slider 4mm" for a 4mm shaft and the appropriate adapter for that.
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