Spool Center Desiccant Holder

I was looking for a good solution for storing my spools with desiccant in the vacuum bags I got. I wanted a holder that would still allow air to be accessible to the desiccant even tho the bag is vacuum sealed. My other concern was that I wanted the desiccant holder to fit fairly snuggly. This part was harder than I ever thought that would be because there seems to be no standardization among spool manufacturers. So what I did was design a holder that would be universal for all the spools, and then just designed a different lid and retaining lid for each of the different sizes I wanted to include.

I decided on 4 sizes that I commonly run into buying filament on Amazon. Normal cardboard spools, plastic spools with a small center hole, plastic spools with a large center hole, and lastly super thick cardboard spools. As mentioned above, none of these have an actual common size to each other, so some may fit better than others. Some spools have a 72.1mm center and others have a 73.94mm center, so with each lid and retaining ring, I shot for a common size and went with it.

If there is a size that I missed and you want to be included, please let me know, and I'll make one as soon as possible.