Prusa Mini XZ Support

prusaprinters

<p>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.</p><p>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.</p><p>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.</p><p>Attach to the 3030 aluminium extrusions using two M5 x 12 mm hexagon head cap screws and T nuts.</p><p>See attached Figure for what this tries to fix:</p><p>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.</p><figure class="image image_resized" style="width:83.08%;"><img src="https://media.prusaprinters.org/media/prints/40128/rich_content/331ecf89-5bce-4f1e-88d1-f6d6610595ea/prusa-mini-diagram.png#%7B%22uuid%22%3A%22a47221e7-6ce6-4e28-adfb-cc1e0aebb432%22%2C%22w%22%3A1198%2C%22h%22%3A1070%7D"></figure><h3>Print instructions</h3><p>I printed everything at 0.2 layer height with 3 perimeters.</p><p>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.</p><p>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.</p>