Hey,
I have been struggling with this problem for quite a while now. I did a lots of calibration but I can’t figure out where this error comes from. I saw an equally looking issue in a different thread but it does not seem to be the same issue.
To me it looks like the infill does peels off the bottom layer.
The filament is dry and I already did some calibration for the filament in Orca Slicer but nothing helped properly (the filament is eSun PETG). It seems like cooling has an effect but it can’t solve the problem completely.
I am not sure about the cooling. Is cooling required and if yes which fan do I need to turn on and how much? Maybe one of you could share me a good working profile for (eSun) PETG and tell me which setting I need to change to get rid off this printing issue.
If you haven’t already, go to the eSun website and download the filament and print profiles and import them into Studio or Orca. https://www.esun3d.com/uploads/HS-Parameters-for-Bambu-Lab-Creality11.rar
As @mltriebe suggested, gyroid is better to prevent the nozzle wiping over itself in each layer, which can cause the effect you’re experiencing.
Also, when you have a model at 45 degrees to the bed, you should change the infill angle to 0 or 90 degrees so it still lays the infill down at a 45 degree to the model. This will help prevent the part from warping and will also help with strength.
Well I didn’t expect the solution to be that easy. I printed the part again and it came out nearly perfect. Actually the infill pattern was the only setting I never changed, thanks to @mltriebe.
Thanks to @RMB for the link to the eSun website, didn’t know about that before.
The only small imperfection I had on this print is this:
Sorry for the bad sharpness, the macro mode on my iPhone sucks.
At certain points the filament looks like it is scorched. I set the temperature to 260°C, 10°C higher than eSun recommends but I can’t imagine that 10°C can cause turning the filament brown. I watched the print quite a while and there are brown fragments on the infill as well. I thought it might be caused by a dirty nozzle, but its clean. Any ideas on that?
If the nozzle is clean, then maybe the filament is not. Could be dust or debris picked up from the bowden tube or the open air, or imperfections in the filament itself. White is not the easiest colour to make.
