Locking Bearing Bracket for Makerbot Cupcake (Q35133)

This bracket is intended to be a printable replacement for the laser-cut brackets used for the threaded z-axis rods. The side-mount bolts pass through captive nuts to lock the bearing (608-style skate bearing) in place, removing the need for precisely aligning the nuts holding the bearing in vertical position on the threaded z-axis rods. It also may allow for easier removal of the z-axis rods themselves when combined with the revised U-shaped z-platform Small Makerbot Parts (thing:926). Note 1: My test ABS print is quite tight around the bearing so the inner radius may need to be increased by 0.1mm or so. Note 2: The 20090928 variant increases the inner radius surrounding the bearing by 0.5mm. A 1mm ring has been added to the top to strengthen the tear-drop, side-mount bolt holes. Note 3: Download the LaserCut variant if all you have is a laser cutter. Parts of the Cupcake design were used to design this part so License is inherited GNU GPL.