Mendelmax y-axis 180 degree bearing retrofit

thingiverse

The mendelmax 1.5 y-axis faces severe overconstraint issues; for a detailed explanation and solution, refer to bilsef's post (http://goo.gl/U2XJN). To resolve this, one rod must be constrained vertically only using an idler, follower, or 180-degree bearing setup. While cartridge roller bearings are a suboptimal choice, they're still better than a non-functional machine. This modification ensures the laser-cut carriage glides smoothly. To install the required hardware, you'll need: 2 m6x30 hex cap bolts, 4 m6 nuts, 4+ m6 washers, and 2 606 bearings. Additionally, for the idler rod, you'll require 2 m5x20 allen cap bolts, 2 m5 lock nuts, and 4 m5 washers. Post-printing, install the bearings on the printed part, marking their positions, drilling holes accordingly, and mounting them to the crossmember. Reassemble and enjoy the gliding carriage. Future improvements include designing a new belt clamp near the master rod for the x-axis and ensuring it isn't overconstrained. The z-axis requires less attention as its rods are decoupled by the bushings on the x-rods. Despite these fixes, a possible purchase of the new y-axis kit may be necessary due to 8mm rods' inability to handle aluminum plate weight.