How long do you have filament sitting “in the open”? I mostly print with a single filament roll at a time, and just leave it on the printer. A 1kg roll lasts me several weeks. For long time storage I keep it in an air tight box with disiccant pouches.
But how long can I let it sit before I should start storing it with disiccant and/or drying the filament before use?
Summer I really make sure they’re in vac bags with indicating desiccant. Winter not so worried. I used to just not care but since getting an X1C with ams I’ve had a number of rolls of pla snap inside and trying to clear that out is annoying. Haven’t really had an issue sense although I have some esun pla+ that is incredibly brittle and will snap just looking at it.