Yet Another Cereal Filament Box

SummaryUpdate 2/9/2021 Added SpoolFastenerBig.stl per comment request with diameter slightly larger than 3" (85mm) for spools with such big holes. I have not printed it yet, but I think it should print without supports and should work. ALSO! mounting tape does not work great, it falls under the spool weight after a week. I have tried E6000 and superglue instead, both were easy to apply and are holding strong.Update 1/18/2021 Confirmed the design works with the Rubbermaid 21-Cup Dry Food Container. Only change needed is to order a longer 100mm M8 rod. The result is a bulkier box, a bit more generic looking but fits well every spool I have on hand.Update 1/10/2021 Added "slim" version of the Box Wall Mount. It works just as good but makes replacing the spool easier. I have discovered this works really well for the slimmer 0.8kg TPU spools but not so well for full-size PETG and some PLA ones. This is because of the indented profile of the cereal box I chose. Waiting on a diffe