Put the z-endstop to the bottom. Add an allen head screw to the x-carrier below the x-stepper, so you can easily adjust z-zero.
If you loose steps, find out why and chose the right countermeasures like:
reducing acceleration and/or speed,
reduce belt tension,
raising driver current,
reducing e-steps or
checking z-steps etc.
-Olaf
Edited 1 time(s). Last edit at 08/12/2015 12:25PM by o_lampe.