Use temperature resistant filament like ABS or ASA to avoid problems.
printer.cfg have to be edit
[stepper_x]
position_endstop: 225 #originally 229
position_min: -5.0
position_max: 225 #originally 229
The author remixed this model.
I had a problem with the original mount from ZeroDotCMD , my K1C crash when try to go X-5.0mm , with this modification you don't need to play with the print area in SimpleAF and keep the default parametres.