It seems that my z height is chaning quite a bit between prints.
Recent Changes:
Started using a better print start macro so I could get a bed mesh integrated into my prints
#Z offset (first layer) changes between prints
worldly basalt
worldly basalt
hmmmmmmmm, mystery continues, I tried the following:
commenting out my nozzle clean macro, test print ran fine, nozzle offset looks ok
uncommented nozzle clean, and it behaves 🤔
worldly basalt
Z offset (first layer) changes between prints
alright, did some more printing, and found that something is changing between prints
the top 2 brackets are just after a firmware reset on my printer, I went and changed a few bracket dimensions, and then with the printer still running, I printed the bottom brackets , and the first layer is all jacked up
worldly basalt
nevermind, its worse
its inconsistent, dont really have 100% steps to reproduce the issue 😦
worldly basalt
it something to do with the a better print start macro, I removed that whole seciton, and just went back to my basic print start macro, and there is no issue with the first layer being too high
modest raptor
Might it be an extrusion problem? Should there be an M82 after the first instance of M83 in the macro?
worldly basalt
Might it be an extrusion problem? Should there be an M82 after the first instanc...
in the print start macro?
modest raptor
in the print start macro?
I'm totally guessing here, but I believe you need to set the extruder back to absolute mode after switching to relative mode here: {% if printer.extruder.temperature >= purge_temp_min %}
M83
G1 E{purge_len} F{purge_spd}
G1 E-{purge_ret} F{purge_spd * 5}
G4 P{ooze_dwell * 1000}
G92 E0
Look at your [gcode_macro _CLIENT_EXTRUDE] for example.
modest raptor
macros.cfg?
worldly basalt
hrm, I dont have that file either, and it's not showing up in github search
(my configs are backed up into github)
modest raptor
It's in the klippy4.log file you posted. Anyway, just a guess on my part to get you wondering if it might be extrusion. I don't understand what the M83 is for so take any suggestion I make with a grain of salt.
I'm leading you astray. I'm not using the purge, but mine has the same code.
{% if printer.extruder.temperature >= purge_temp_min %}
M83 ; relative mode
G1 E{purge_len} F{purge_spd}
G1 E-{purge_ret} F{purge_spd * 5}
G4 P{ooze_dwell * 1000}
G92 E0 ; reset extruder
{% endif %}
modest raptor
Sorry to lead you astray. I'm curious now. Are you using an auto z offset, a tap probe. fixed offset?
worldly basalt
using klicky probe, but none of the auto z offset stuff
still a fixed offset, with klickly for probing, ETC
modest raptor
Klicky is pretty consistent as long as the probe mount screws stay tight. Auto z and TAP needed some extra cleaning steps to avoid blobs changing the offset between prints.
hasty iris
better cooling of the motherboard