I’ve been considering getting refills to reduce my plastic consumption, which means I would have to print master spools with PLA or PETG.
Because I don’t consume my filament quickly enough, I got the Sunlu S2 filament dryer, which heats up the filament to 50-60C.
My question is: would it be OK to put a master spool in the dryer, or could it potentially deform?
Use ASA. PETG will creep.
ASA will creep significantly less. If you have fibre-filled materials they also excel in this regard but are probably overkill here.