Added a rail to the XL10t pulley to help it hold on to those wandering XL belts.10t XL Pulley for SAE Prusa Mendel created by Ben Jackson is awesome. I updated the pulley to add a rail to hold on to the belt. It helps on my bot and has been adopted by ccckc members in the group prusa mendel build. I printed 8 of these for the group on last Saturday.I output from openSCAD the pulley. I used meshlab to create an object file fom the STL out of openSCAD - I opened the object file in Hexagon and added the rail and Boolean union the rail to the pulley.Print one for yourself to help control your wandering belts