Prusa MK3 LM8UU Y Axis Bearing Holder Pillow Block with Nut Trap

Remix of a nice design from Mimisb13 to eliminate the need for the U-bolts holding the carriage to the linear bearings on a Prusa MK3. If over-tightened, the U-bolts will crush the linear bearings and score the rods - these help reduce your ability to do that. These are exactly the same as Mimisb13's design, but I added a nut trap to provide some real threads to grab when the M3 is screwed in from the top. Should fit a standard M3 hex nut. Print three of these in the default orientation for