This is the only place in the whole print where this happens.
this post was submitted on 20 Oct 2023
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I have this kind of issue with shitty white filament. Changing the filament with better quality ones solves the issue.
For this roll of filament, it looks like a retractation setting problem. When the head "jumps" across the hole, the printer retracts the filament to release the pressure. If the retractation setting it too high, it will starts the new slice with a lag in the pressure, leading to underextrusion.
You may try to calibrate your retractation setting. The value should be lower. You may get other artefacts (filament residue in the hole) but it's easy to clean.
You can make a "retractation tower" to get the best value.
Will try, but the filament is great (Prusament PLA) and the retraction settings are the default in PrusaSlicer for my Prusa printer (MINI) and the aforementioned Prusa PLA.
But thanks, will try playing with retraction settings the next time.
Check that the feeding gear on the extruder is properly engaged on the filament.
I had this issue and it turned out the pivot point on the extruder had gotten sticky, so the spring wasn't compressing the gear onto filament enough to reliably grab it.