Ender 3 XY Idler Pulley Mount

thingiverse

I revamped WhittM's mount for easier use. This new design prevents X and Y belts from rubbing against aluminum extrusions, addressing a flaw in Creality's original design where the motor pulleys are below the extrusion while the belts attach to carriages above it, forcing them through the t-slot opening.\r\n\r\nThe mount installs on the Y-axis without modification. However, you'll need to modify the X-axis plastic motor mount to fit the new setup. I trimmed WhittM's version too little material, so I'll upload clearer pictures showing how to cut off the black leg with a Dremel tool. You won't be able to reuse the screw that's now removed, but it's not necessary anyway.\r\n\r\nNo additional fasteners are required for installation, but you will need one pulley per axis. I used toothless GT2 idler pulleys with 5mm bore; a set of five costs $10 on Amazon through this link: https://www.amazon.com/gp/product/B07D9GBWVS/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1\r\n\r\nI haven't verified if this design works with the CR-10 or similar printers, but it should fit standard 20mm t-slotted aluminum extrusions.