This is my design of a complete X-Axis for P3steel 2.x. May fit on any other Prusa i3 printer. Redesigned from scratch. Reinforced. Integrated belt teioner. Teion force doesn't affect the Z smooth rods. Belt is perfectly horizontal and parallel with MF126 bearings and 20 teeth pulley. Standard M5 thread Z-Axis is im my opinion the best solution. I designed X-axis 2 carriages. One for the standard (scrap) LM8UU bearings and one for IGUS RJZM-01-08 bearings. Z-Carriages are designed for use with LM8UU bearings. Carriage is compatible with the rework one. Have a look at my modular bowden hotend mount: Fits perfectly. Best use with X-axis endstop mount: These are the next parts of a complete series for P3steel parts. I redesigned every part based on my long time experience with the P3 steel. Updates: 2015.10.01: X-axis part 4 ist now manifold/watertight -- now: v1.11 2016.02.11: Z-Endstop trigge are now mk2 veion (short and long veion available) Please share your makes!