Print 1 part A, 1 part B to make a pair. 0.2mm layer or thinner. 100% infill in all layers.
Each pair requires : 1 M3x8 allen cap screw, 3mm spring washer and 1 M3 nut
Cleanup with a triangular file may be required to mesh teeth properly. Place the tensioner as close to the carriage as posible.
If you wish to sell physical prints of my designs, please subscribe to my patreon https://www.patreon.com/boksbox/ for a license to print and sell them. Thank you.