Lulzbot Mini upgraded Y-Ends

thingiverse

The default Lulzbot Mini Y-axis on my printer was woefully inadequate, it cracked under stress. Furthermore, when I attempted to tension the belt, it warped the frame beyond recognition. So, I took matters into my own hands and designed a solution from scratch. These replacement parts are crafted with an extremely high level of precision in mind. If you're unable to print at high quality settings, you'll likely encounter some difficulties and need to perform some additional fine-tuning to get everything to fit together seamlessly. This modified Y-axis system utilizes a set of screws located on the rear of the rods within the motor mount component. By inserting a nut and securing it with a 20mm M3 screw, tightening the screw progressively increases tension on the Y-rod assembly, effectively shifting the belt's stress away from the frame. I also re-engineered the Bearing holders, as the original stock components were notoriously loose. It's imperative that the bearings be press-fit into place, which is something Lulzbot glaringly overlooked during their initial design phase. These types of bearings require a precise fit to function correctly, and I made sure to incorporate this critical detail into my redesign. When I first installed the bearings, they were excessively tight, necessitating some creative problem-solving on my part. I had to fashion an 8mm rod into a makeshift drill bit and carefully wear down the bearing until it could move freely. While this approach may not have been ideal, it still resulted in a far superior setup than what Lulzbot initially provided.