Prusa MK3(s) Y-axis Igus Bearing Housing

thingiverse

NOTE: Update again for R05. Print bed was loose (R04) and could be wiggled approx 3mm up and down at its front and back edges. I tightened the hold on the bearing OD and suggest using nylock nuts with M3x16mm screws, just like came with Prusa kit. I tightened the screws until they were hand tight then backed each off a little at a time until the bed moved by hand with just a little resistance. Now I've got no wiggle, no vibrations, and smooth printing. Finalized Dimensions with R04. Retaining ridges were coming out too wide and squeezing bearings making them too tight on rod and bolt holes to go out of alignment. R04 printed with bearings being lightly held from rotating in housing and assembled fine to Y axis rods. I have a little up and down clearance in the y-axis with R04. I'll make a R05 this weekend that should tighten this up but I haven't had any issues printing 8+ hours so far. Went to put my new Mk3s together and ball bearings were crunchy and nothing like my Mk2s Haribo edition with IGUS bearings on Y-axis and X-axis. Amazon one day shipping saved the day, but my 3D printed bearing holders from VonPitter had unneeded thick flanges for hex nuts to compress. This made it difficult to find screws that were long enough without causing interference with frame as it passed by. So I designed these from scratch in a hurry to be able to put my printer together tomorrow night. Should work on LM8UU and IGUS RJ4JP-01-08 bearings. Printing in black PETG, 5 perimeters, 30% fill.