Filament roll holder

Use the different sizes plus the distance ring to hold different size filament rolls with a different width, eg 75mm (=2 x 37,5), 80mm (=2 x 40), 85mm = (2 x 37,5 + 10), 90 mm (=2 x 40 + 10)

You will need:

1 8mm axis
2 608 ZZ bearings per holder
8 M4 x 16 hexagon socket head screw
8 M4 nuts

Use the small distance ring to separate two holders.

The bearing cups are disigned for a 4 degree wall inclination, such as those https://www.bauhaus.info/kunststoffboxen/smartstore-aufbewahrungsbox-classic/p/20582986