Anet A8+ lm8uu replacement with bracket

thingiverse

I tested several lm8uu alternatives from this site before printing my design, and none of them met my requirements. Some lacked stop lines for bearings within the bracket, while others had bearings that were too tight. I also prefer a bearing design where the bearing doesn't touch the shaft on just half the surface; instead, I think it's better to use the entire surface. Furthermore, some springy features help compensate for micro-defects in the shaft. I printed my bearing design with the highest quality settings: 0.1mm layer thickness and 100% infill. The bearing was printed with SBS material, while the bracket was made from PETG. For a test print, I used a 0.2 mm layer, a speed of 60 mm/s, and a travel speed of 120 mm/s, which produced nearly perfect results. The only issue I encountered was some vibration, but that's easily resolved by applying silicon grease with PTFE after grinding the bearing. This allows it to move smoothly along the shaft without becoming loose.