I needed a spool holder for a small 3D printer as well as a filament rewinder.

My printers use different size spools depending on what filament is used and different manufactures use different size and materials in the spools they use.

BOM,

(2) Printed side plates
(2) 5/15" x 4 3/4" all thread rods
(2) 5/16" Hex nuts
(4) 5/16" Acorn nuts
(4) 608 bearings
(8) 5/16" Flat washers
(8) 5/16" x 1 1/2" Fender washers
(4) 5/16" Shaft collars