Just my 2 cents, but don't waste your time. Just get a good sealable tote and pull out the roll to print then put it back. I printed spacers to fit each roll to fit on a 1.5 pvc. Moisture would still wick up the filament and get brittle and break. So I'd have to take it apart to feed the filament and every time a roll ran out, I'd have to take it all apart again. It just all became more work than it was worth. I now use a sealable tote or when I can find them cheap enough Tupperware cake holders.
Shits going to smell like shit.