I've been using my Prusa MK3s for several years and have used it extensively at intervals. Now, I'm facing the issue that I can't achieve good results anymore. There are "holes" in the prints, and sometimes the material sticks to the hotend. I wonder if this is caused by the filament becoming too moist. As a test, I've used various rolls of PETG, but obtained more or less the same results. Subsequently, I dried one of the PETG rolls in the oven at 50 degrees Celsius for 6 hours. Initially, this seemed to bring improvement, but the problem resurfaced afterward.
See photo.
See photo.
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