Help / Troubleshooting
Why are there blobs or zits on my outer wall?
Pressure advance is the usual culprit. Here is where to start your tune.
Pressure advance (or linear advance, depending on firmware) is not tuned. Run a PA test in your slicer, for Forgely PLA at 200 mm/s on a Bambu, start at 0.030. Also check that retraction is not fighting itself: too much retraction on a direct-drive setup grinds filament and causes oozing on the next move.
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