About this 3D model
This thing is a derivative of the v2 X carriage found on the Github/Makergear/file repository. This design is modified to fit LM8UU bearings. This x carriage fits a Makergear extruder or bowden cable adapter. Credit goes to Xnaron's "snap in holder" design for inspiration. The carriage should fit a regular Prusa Mendel as well. I have included the Alibre design file for those who have access to this program.