Prusa i3 Z axis mount for optical endstop

thingiverse

I created this custom part because I was experiencing repeatability issues with homing the Z-axis on my i3 that relied on mechanical end stops. A 0.1-0.3mm difference in home position wouldn't make a big difference for X and Y axis calibration, but it could easily ruin the first layer of prints on the Z-axis due to inconsistencies. To solve this problem, I decided to switch to optical end stops instead, but unfortunately, no existing mounts fit my needs when they arrived. This is when I designed the new mount featured here. Now, follow these instructions to install your custom part: To begin, you'll need 2 M3x8mm screws to secure the bracket to a smooth rod and another pair of 2 M3x10 screws along with two matching nuts for mounting the optical end stop to the custom-designed bracket.