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Understanding Z-offset in custom firmware
Steve
Posts: 3Member
Probably me misunderstanding something. Flashed new A5S with custom firmware (latest stable release). Mesh bed leveling seems to work well. During the initial stages of printing I go under tune and adjust Z-height from 0.00 to say -0.035 to get a better first layer. Baby stepping seems to work great. Print finishes and I turn off printer.
Now here is my confusion. When I go to print something else my Z-offset still reads -0.035. When I go to start printing, I can tell I am a bit to high and have to lower the z-height by baby stepping again. So now for my second print I am at -0.070 my third -0.105 etc. I must be doing something silly or missing something.
Here is my start G-code
; -- START GCODE --
G21 ;set units to millimetres
G90 ;set to absolute positioning
M106 S0 ;set fan speed to zero (turned off)
G28 ;home all axis
M420 S1 ;turn on mesh bed levelling if enabled in firmware
G92 E0 ;zero the extruded length
G1 Z1 F1000 ;move up slightly
G1 X60.0 Z0 E9.0 F1000.0;intro line
G1 X100.0 E21.5 F1000.0 ;continue line
G92 E0 ;zero the extruded length again
; -- end of START GCODE --
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