Ignoring the Z homing before a printing

jedjej

Hi everybody !

I build a 3D printer, it is my first and I have some trouble to obtain a clean Z homing, and as a consequence problem to have a good first layer.
I wonder if it is possible to ignore the Z homing before a printing. What I'd like to do, is to manualy place my extruder à 0 with manual control in Repetier Host, then tell Repetier Host "This point is 0", and Repetier will start the printing from this defined 0 level instead of homing to the Z_min endstop.

Is there a way to act like this ?

Thanks you by advance ! :)

Repetier

Yes, you can do that. Just change you slicer code to not contain G28 but G28 X0 Y0 instead, so it does not home z.

If you then go to 0,0,0 send

G92 X0 Y0 Z0 ; Mark current position as origin

@isatorigin

last command is for host to know it is at 0,0,0 without homing.

Having said that, do it! Calibrate your z min endstop to work properly is the best method and much less timeconsuming. A more simple solution is having z max endstop. Then you can simply change z length until position fits.

jedjej

Ok thanks for you help, I'm gonna try this solution :)