I use Slic3r to create G-codes for my Labists ET4 printer. Usually, no problem.
Now, as soon as I tried to start a print, the nozzle head went down as usual, but this time it went a bit lower than 0 and the machine made angry noises for less than a second.
It went back up again and heated the bed and the nozzle, only to go back down too strongly with angry noises again. Even left a little pokey hole on the bed.
I got scared and turned the machine's switch off and manually raised the Z axis with ease.
Never had this problem before and now I'm afraid to turn on my machine.
I've had the following setup for G-codes prior to today's incident and it had worked just fine:
G28 ; Home extruder G1 Z15 F[travel_speed] M106 S[max_fan_speed]; Turn on fan G90 ; Absolute positioning M82 ; Extruder in absolute mode ; Activate all used extruder M104 T0 S[first_layer_temperature] M190 S[bed_temperature] G92 E0 ; Reset extruder position ; Wait for all used extruders to reach temperature M109 T0 S[first_layer_temperature]
After this, I did try the auto levelling, however it still tried to plow into the bed, albeit not as angrily.
Here's other things to potentially consider:
- I haven't used the machine 10 days.
- It's been chilly in the room where the machine is.
So here's my questions:
- "What could cause a 3D printer to have an incorrect impression of Z-axis=0 even in absolute position mode?"
- "What can I do to fix it?"