Original Printrbot Plus (v1) Y bearing blocks

The four Y bearings are attached with zip-ties which are hard to make perfectly snug. This can cause the print bed to skew when it moves in the Y direction. This is a part that fits over the two bearings on one side instead of the zip ties, and holds the bearings snugly in place.

Just one is a huge improvement, or you can print two (one for each side), they are made to go on either side.

The part screws into the Z stepper mounting holes and existing slots, and will require longer screws (M