Y axis clamp for Geetech Prusa i3

thingiverse

I designed a new Y-axis tensioner for my Geetech Prusa i3, which was previously plagued by belt slippage due to poor tensioning. The old design relied on drilling holes in the belt and screwing it into an aluminium block, resulting in uneven belt alignment and impossible adjustments. When the original bearing seized, I decided to upgrade to a higher-quality bearing and matching belt. However, I knew I had to address the tensioning issues once and for all. I drew inspiration from my successful X-carriage clamp design, which has performed flawlessly without any problems. The attached .scad file contains all adjustable parameters at the top, allowing you to customize the depth of the clamp and other settings as needed. The accompanying .stl file is tailored to my Geetech Prusa i3 but can likely be adapted for similar designs with minimal adjustments. If anyone requires a customized .stl file without modifying the .scad file themselves, please let me know. Print Settings: Printer: Geetech Prusa i3 Rafts: No Supports: No Resolution: 0.2 Infill: 20% Notes: I printed this part with 20% infill and a 1.2mm shell thickness for the top and bottom, using it in an oriented position as shown in the .stl file. Post-Printing: Add captive M3 nuts into the provided positions to replace the original aluminium block's tapped holes. I used slightly longer M3 bolts than usual due to the nut diameter being set a bit too tight, requiring pliers to insert them properly.