First perimeter not sticking for 3-4 cm
Hi guys
I have a somewhat curious problem: the first perimeter does not adhere to the print bed for about 3-4 centimeters. The purge line is great, also the first loop. But then when the printer starts with the first perimeter, it does not adhere, but only after a few centimeters. This is not a problem with smaller parts, but rather when it goes to the outside. After the beginning, the perimeters then adhere to the print bed, the infill too. There are then no problems. To me, it looks like either the nozzle is too high and descends too slowly, or there is an underextrusion on the first few centimeters.
What I have already tried:
- Clean sheets (I have tried 5 different ones: 2 satin sheets, 1 textured sheet, 2 smooth steel sheets, 1 of them with Dimafix)
- Object turned in slicer (but it doesn't matter at which corner it starts)
- First Layer Calibration (but the first layer is close to perfect)
- Clean the Extruder Gears
- Cold Pull (but no residue, there is no indication of underextrusion)
- Measuring the E-Steps (I am using the Bondtech Extruder without problems for one year)
- Change Filaments (tried with different PLA and PETG)
- PrusaSlicer 2.5.0 (with Arachne and Classic), PrusaSlicer 2.4.x
Does anyone else have any ideas what I could try or what the problem is?
Regards
Martin
RE: First perimeter not sticking for 3-4 cm
Photos might help. Skewed bed perhaps? https://help.prusa3d.com/article/xz-axis-skew-correction-mini_158518
Formerly known on this forum as @fuchsr -- until all hell broke loose with the forum software...
RE: First perimeter not sticking for 3-4 cm
Is it extruding but not sticking (in which case you will have artefacts from the loose filament sticking to the print elsewhere) or is it simply not extruding for the first few centimetres ?
2 very different effects, knowing which one would help narrow down possible avenues of investigation.