Vertical carriage for Rostock
by Johann, published
This part is the vertical carriage for LM8UU and universal joints to attach two diagonal rods.
Newer versions of the OpenSCAD source files will be published here: github.com/jcrocholl/rostock
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If they were loose enough to spin freely, the platform would have backlash and your prints would be inaccurate. The holes should be very tight, so that the M3 screws will cut their own thread into the joint pieces. First there will be some friction but after a while, they will move smoothly but wi
Actually, I didn't realize there was a forum running, I'll move this over there, thanks! https://groups.google.com/foru...
Hello! Very exciting reading about the Rostock. I just received a printed parts set I had someone print for me. It looks very high quality, but the universal joints seem very tight, is that normal or should they be fairly loose? Should the holes for the m3 nuts require drilling out?
Thanks so much for sharing this design.
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Screw a M3x16 with a round head into the vertical hole to adjust/calibrate the top endstop. You shouldn't need to pre-cut the thread, it should fit very snugly if your printer is calibrated properly.
Put four M3 nuts inside the universal joints. Then insert four M3x12 screws with washers through these nuts and into the universal joint pieces. Tighten them pretty well to prevent the delta robot from unscrewing itself.
For all fasteners I recommend stainless steel.
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