Post print parking position suddenly on the print bed
I have been printing with my mini for a couple years now and suddenly the print head parks at Z=0. So far I've manually positioned my prints so there's no clash, but I would prefer to have it park above the tallest layer like it used to. I checked the end Gcode (prusaslicer 5.2.2) and everything looks OK to my untrained eye, but I hope someone here will be able to confirm and to help me solve the issue:
G1 E-1 F2100 ; retract{if max_layer_z < max_print_height}G1 Z{z_offset+min(max_layer_z+2, max_print_height)} F720 ; Move print head up{endif}G1 X178 Y178 F4200 ; park print head{if max_layer_z < max_print_height}G1 Z{z_offset+min(max_layer_z+30, max_print_height)} F720 ; Move print head further up{endif}G4 ; waitM104 S0 ; turn off temperatureM140 S0 ; turn off heatbedM107 ; turn off fanM221 S100 ; reset flowM900 K0 ; reset LAM84 ; disable motors; max_layer_z = [max_layer_z]
RE: Post print parking position suddenly on the print bed
What firmware version are you running on the mini ? Theres a known issue from quite a few versions back that was fixed. It caused exactly the issue you describe. Fixed by updating the firmware.
For example https://forum.prusa3d.com/forum/hardware-firmware-and-software-help/print-head-collides-with-print-after-printing/
or https://forum.prusa3d.com/forum/assembly-and-first-prints-troubleshooting/after-finishing-the-print-the-nozzle-parks-itself-in-the-upper-left-corner-of-the-bed-completely-squashing-the-print-in-that-area/
or https://forum.prusa3d.com/forum/prusaslicer/prusaslicer-2-5-0-mini-printer-ends-by-diving-into-bed-why/
RE: Post print parking position suddenly on the print bed
That fixed it, but it's odd that it suddenly started without me having done anything. On the other hand, I'm suddenly getting show stopping amounts of stringing, where I got almost none an hour before with the same filament and print settings, but with the old firmware. I guess I have to completely re-optimize everything on the new firmware?