Fillament spool holder/roller
thingiverse
That's a clever design for a rack to hold multiple spools of filament, allowing them to rotate freely while being pulled by the printer. I drew inspiration from existing designs, but added my own twist with a few modifications on a rack. The number of rollers can be adjusted, and the middle section is optional since a 10mm steel rod should provide sufficient support without deforming too much under load. This design should be able to hold six or seven standard spools weighing one kilogram each.
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