Prusa Mini XZ Support

For those of you with the X axis that is WAY OFF here is something to fix that. I printed many parts on my Mini but noticed some striping on taller parts. So when I got Octoprint setup and ran Bed Visualizer it was pretty obvious what the issue was. My X axis was over 2mm off from one side to the other.

I tried the Prusa MINI Z-Axis Support Brace which helped make the vertical arm more rigid but it didn't help with how far the X axis was off. This adds an adjustable leg that extends out from the vertical arm. The screw has a slot on the top that can be accessed through the support. Just turn the screw and adjust till the X axis is level.

If you don't know if you have this issue just take a look under the electronics box from the front. It was noticeable on mine that it wasn't level.

Attach to the 3030 aluminium extrusions using two M5 x 12 mm hexagon head cap screws and T nuts.

See attached Figure for what this tries to fix:

Extrusion A is used to connect the Z axis arm C. The Z axis arm is off center from the Connection point on A and has a decent amount of weight. This causes it to sag at point B. This in turn causes a change where Z axis is no longer 90deg from point A. This angle offset will translate into a difference between Z1 and Z2 between the extruder and build plate.

Print instructions

I printed everything at 0.2 layer height with 3 perimeters.

I added a V3 that changes the location of the cutout to better go around the lower screw. I noticed it wasn't perfect when printing a second one.

I wanted the screw to be tight so it wouldn't move. For that one you may need some wax to get it to twist in smooth. I also included one that is loose and goes in easy for those of you that don't want the tight fit.