Defect between the lower layer and the wall

I have a defect between the bottom layer and the wall that I can’t get rid of. I’ve managed to make the bottom layer no smaller than the walls, but there’s still a mark on the outside wall. I’ve printed it 24 times. What I’ve tried:

  • Change the order of the walls; -
  • Increase the number of walls to 5; -
  • Change the infill to gyroid, lightning, no infill, increase the infill;
  • Cooling always at 80% throughout the print;
  • Same speed throughout the print (120 mm/s);
  • Decrease the temperature by 15º; - Change the Infill/Wall Overlap to -50%;
  • Use Arachne wall
  • Etc

the file is small. if anyone can help me find the perfect combination, i would appreciate it

You can properly calibrate the flow ratio and k-factor, this will reduce the defects a bit.
You can also try to reduce the print speed a little bit.
But I doubt you will be able to print those things perfectly.

For me the best working combo is calibration a reduce speed discontinuity setting and abusing a lower max flow rate to slow things down when needed.
The later though is relative as, for example PLA I usually print with a default speed starting at around 300mm/s …

X1teste.3mf (41.2 KB)

Jayo PETG, calibrated and sliced with OrcaSlicer, 0.20mm Standard @BBL X1C, except wall order changed to Inner/Outer/Inner. I actually used filament settings from red Jayo PETG, a small bulge at the corners might be improved with further PA tuning. No other changes.

If you have a really good light and look at the correct angle, there is still a very slight change in reflectivity where the layer times change, but my digital calipers cannot measure a dimensional difference.

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