Does anyone use "space saver" style vacuum storage bags to keep fillament dry? I picked up some Ziploc space bags, but they are larger than ideal. Would probably fit 2.5 spools. I would love a smaller version just big enough for one spool.
I have a commercially available product known as a foodsaver (TM) which removes the air from the bag and really squeezes tightly around the spool. The width of the bags I use barely takes the typical spool but it does fit with a little elbow grease.
I include a bag of desiccant in each bag to pull any residual moisture.
It's a good idea to use the cut-to-length bags on a roll, which allows you to add excess length, as you have to cut and toss away the previous seal each time you use the spool.
I too purchased the big honking bags and never built the structure I planned to use with it.
So many compromises regardless of the method used. I've since switched to Sealtite Storage Bins from Target. They have a gasket around the lid and I've increased the bag of desiccant in each one. They stack well too.