Ender 3 XY Belt Tensioner

thingiverse

I spent some time reworking this design because all my previous attempts gave me problems. There are two versions of the Y-axis, with version 2 featuring extra support (which might be overkill). Installation: You'll need 2 M5x22 button head screws and nuts for this project. To get started, you'll have to print two spacers for each axis. For both X and Y axes, as well as the V2 of the Y-axis, you will require some M4x8 screws and hammer nuts. You should end up with a few extras after removing the stock belt holders. Next, assemble the inner shaft by combining 2 pulleys, 2 spacers, an M5x22 screw, and its corresponding nut before inserting it into the outer shell. Make sure to use the correct inner shaft for the X-axis or else you won't have enough space for the pulley and belt to pass through.