This is a 4 wheels holder, but does not require size adjustment and accommodate 30-78mm filament spools.  It is the perfect size to be placed on top of an enclosure and covered with a dry box (Fits in a 90 mm wide).

Required other than printed parts:

• 4x 608 bearings
• 4x M3 square nuts or 4x M3 hex nuts
• 4x M3x14 screws

Print settings

• Material: PETG, PLA, ABS
• Layer height: 0.2mm
• Supports: no
• Perimeters: 2
• Infill: 15%

Notes:

• Hex nut or square nut can be selected.
• Be careful not to over-tighten the screws, otherwise the printed parts will be damaged.
• Bearings should be installed to the end of the wheel.