About this 3D model

The part is design to allow bent threaded rods move more freely, so that the z-wobble is eliminated. However, the design is not perfected. I think it removes about 60% of the wobble. The design was inspired by chylld's corner set for rapman; in fact, I used the dimensions from the stl file to make this part. Thanks chylld. I should mention, though, that this design would work better when the corner bed holder uses only one nut. I will be testing this with chylld's corner design. VIDEO: http://youtu.be/EsNoyRQnc-0