Ender 3 Z-Axis stabilizer w/bearing

by pruckelshaus Aug 10, 2018
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Why do you have a prominent part at the screws exits, since the 4020 metal rods are flats at this place (as far as I can see...) ?

I think you're confused about where this installs. It installs on the 2020 cross bar, not on the 4020 upright.

They are actually V slot, the bump keeps it centered on the extrusion and perpendicular to the screw. I also suggest leaving them slightly loose after installation and then running the Z axis to the top, then tightening the screws down.

OK, that's strange, because when I put a ruler perpendicular to the axis, this does not show me any gap...