Sometimes my Extruder will start spinning pointlessly fast and long.
This Issue only happens:
- When printer has finished a Layer and moved up to the next (right after the Z axis has moved)
- Not on all, but only on some layers of a print.
Typically it will be more towards the middle of a print, and it will happen on several (maybe 10, 20, or a lot more) consecutive layers
My regular Setup/Stack:
- Octoprint (Version 1.4.0)
- Tevo Tornado (with Mamorubot print-platform)
I have tried to test whether the source of the problem could be Octoprint or the slicer/gcode.
The problem persists, when i print directly from SD
Here is some gcode, one of a layer change where the problem did occur and one where it was fine: Problem occured here:
G1 X167.854 Y170.305 E209.95401 G1 X167.851 Y132.289 E210.24063 ;BEFORE_LAYER_CHANGE G92 E0.0 ;3.95 G1 Z3.950 F7800.000 ;AFTER_LAYER_CHANGE ;3.95 G1 X168.141 Y131.859 G1 F3600 G1 X129.532 Y131.858 E211.24663 G1 X128.945 Y131.592 E211.26340 G1 X128.419 Y131.004 E211.28396
No Problem occured here:
G1 X168.288 Y170.558 E474.06508 G1 X168.224 Y170.259 E474.06950 G1 X168.213 Y131.857 E474.62495 ;BEFORE_LAYER_CHANGE G92 E0.0 ;9.8 G1 Z9.800 F7800.000 ;AFTER_LAYER_CHANGE ;9.8 G1 X168.559 Y131.441 G1 F3600 G1 X129.622 Y131.440 E475.63947 G1 X129.198 Y131.248 E475.65161 G1 X128.776 Y130.777 E475.66807
I cannot see any problem with the gcode.
Now I am at my wits' end - what could be the source of the problem, and how to I proceed to debug it?