Inconsistent first layer
I have very weird behaviour on my first layer, which I can't seem to get right.
What I have tried:
- Get my frame square
- Z height
- EM tuning
- Temp tower
- different speeds
- different extrusion widths
- different filaments
Its a VC3.1 400 with a Dragon HF and a Super PINDA.
I am using @Helge Keck PAM, so I feel that the important part of the bed is being probed before the print.
Attached are some images, the print startet on the bottom right corner.
I would be very grateful if somebody could identify this problem for me...
11 Replies
Eliminate variables... Check probe for consistency, disable PAM... Use test squares to see if there is improvement
make a complete mesh and show it
this is actually a pretty flat bed
this almost looks like extruder issues
this repetive pattern points maybe to it
but i am not entirely sure tbh
Ok, thanks for the feedback, really appreciated! I will do some extrusion tests in that case...still have to figure out how exactly, that it would be meaningful. 😅
do you print by chance PETG or PLA enclosed in this case?
mainly ABS, then it's closed, for PETG I leave it open, otherwise I get clogging. No PLA.
This may be gantry or bed flexing/moving a bit as things warm up... Although I wouldn't expect to see that happen so quickly over the course of the first layer...
Is that bed mesh cold or hot? Maybe try a mesh at the same bed temp and extruder temp that you are printing at...
OK, so it turns out it was the hotend which was partly obsrtucted due to sone residue from an earlier clog. It just wasnt noticeable at normal flows but around 22mm/3 I would get the result. After trying with a rapido and 0.6mm nozzle it looks near perfect.
Thanks for your effort guys!!