I’ve heard I should store filament in sealed container, preferably with a desiccant.
But let’s say I let a spool get a little old on the printer, or I purchased a filament spool that was old or improperly packaged. How would I know? How would this impact prints (what kind of symptoms would I see)? What things could I do (perhaps in the slicer) to correct for this and prolong the life of marginal filament?
And the corollary… in a typical environment, how long can filament be left out without suffering from the exposure?
I’m thinking mainly about PLA, but responses for ABS and other materials are useful, too.