Z thrust bearing mount for Loches upgraded MG Prusa

by fehknt, published

Z thrust bearing mount for Loches upgraded MG Prusa by fehknt Jan 9, 2013
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This is kind of an ugly hack to make the nice coupling system from http://www.thingiverse.com/thing:16263 work with a MG Prusa that had Loches Z axis upgrade http://www.thingiverse.com/thing:22887 applied. Basically, I de-integrated it a bit. Works great except that the rods no longer reach the lower constraint. I recommend printing a new lower z-axis stabilizer before mounting these.

Poor print quality was from a botched slic3r config on my part, but it works...


Print, replace the top motor mounts with these. See "parent" thing for more detailed instructions - you'll need some long M3 screws and a pair of 608 bearings.

Update: I recently switched my bearings to some 22mm outer, 1/4 inch inner "extended inner" bearings I found from VXB. It's odd they have the two different measurement systems, but it's exactly what I needed for this. 22mm outer fits in the holes made for 608 bearings, but 1/4 inch inner fits my ACME lead screw. And the extended inner section means that the bottom constraint actually does just reach.

Adjust, adjust, adjust! It really does make a big difference in print quality if you have wobble in one or both of the z leadscrews...

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http://www.thingiverse.com/thing:16263 is not found, are you just referring to the flexible metal couplings? By the way, love your Z-axis upgrade, my Prusa is printing better than ever :)

Huh, I have no idea where that thing went but it was the "integrated z axis" that reduced the need for some of the Prusa parts. This doesn't reduce parts at all (only adds). Anyway, not too critical to know what it is just wanted to give credit for where this came from. I'm glad it's working for well for you!