interconnected multiple spool holder
thingiverse
Humans can easily connect the spool holders to and set them into compact, air-tight enclosures. These enclosures come with some adjustment capabilities for accommodating different widths of spools. However, the design primarily caters to ESun filament spools. You will need four ZZ809 bearings (8x22x7 mm) per holder or equivalent bearings with an 8mm ID and a width greater than 7mm.
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