Spool Cover for Enclosures with optional desiccant canisters

I designed this cover after having left a spool of filament on the cover of my IKEA Lack printer enclosure for a few weeks while I was away working. Upon return, I discovered the spool of PETG had deteriorated somewhat, presumably from moisture absorption from the surrounding air. The cover is intended to be made from 4mm acrylic sheet and is a simple drop-over design, hopefully protecting the spool from fluctuations in temperature and humidity of the ambient air. Desiccant may be added inside t