Folgertech 2020 Prusa i3 X belt tensioner

thingiverse

Yes, another x belt tensioner for my Prusa i3 - this one's specifically designed to fit the Folgertech 2020 Prusa i3 version with chamfered holes in its carriages. Every other option I found had rectangular parts that wouldn't fit the Folgertech model properly. This particular one also uses the stock flanged bearings that come with the kit. To make sure the bearings move smoothly, I added washers on either side. Unfortunately, it required a slightly longer screw to secure the bearings. Here are my printed instructions: Instructions: Printed in ABS at 0.3mm layer height with high infill (minimum 70% for optimal strength - no supports needed). Vitamins: For Bearings: 1 - M3x20 screw for bearings (longer than standard) 2 - Optional M3 washers For Tensioner: 1 - M3x25 or 30 screw 1 - Single M3 washer 1 - M3 nut I did take an extra precaution to prevent cracking: I applied acetone to the bearing ends for added solidity. Note that you may need to adjust your X endstop based on how long your belt turns out.