X End with tensioner for prusa I3 Box Frame

Hi, I have decided to edit this piece by adding a simple system to tighten the belt. I used the original piece extracted from the reprap wiki (project clone wars). It is operated by a screw and 2 nuts of 3mm. The shaft of the bearing can be a smooth or threaded rod of 8mm in diameter and 18.5mm in length. The bearing used is the 608zz.
This X End is only valid for the BoxFrame model.

*Edited 09/02/17 more strong support to the tensioner