Ender 3 CR-10 Z axis linear rail conversion

thingiverse

It's extremely difficult aligning two linear rails for a Z axis conversion. Most only work because they use cheap rails and there's enough slop in them to accommodate the misalignment. Therefore, this conversion only converts the more critical and harder to adjust extruder side, and leave the v-slot wheels on the other side. This conversion also only requires a single pre-existing hole to be enlarged and doesn't require any additional drilling or cutting. It also allows for very accurate and easy X gantry alignment. The extruder side eccentric wheel's hole on the front plate needs to be enlarged to 9/32" and the stock bolt used with a washer under the head. To adjust the gantry, loosen up all the bolts securing the rail adapter block to the gantry, rest the gantry on alignment blocks sitting on the frame, then re-tighten the bolts. I've included alignment blocks you can print.