Spool Holder/Guard/Belt - adaptable width (170x170mm printable)

thingiverse

The goal is to prevent filament from unraveling and protect it against dust and other contaminants. This adaptable part can be used for all spools on the market. Before creating a custom part, measure the spool width from one disk to the other, taking into account that each disk's thickness should be divided by two - distance from neutral axis to neutral axis. Afterward, assemble different part widths (see exploded view). Pay attention to use the correct distances, such as 8.5mm/12mm at both ends and 14mm/7mm at the center. Once printed, remove all plastic supports around the filament guide using a cutter and wire cutters. Then, wind the filament around the spool, making sure both disks are centered by the part gutters. You can use one or two elastics (120mm*1.5mm recommended), but it depends on the torque your extruder can handle without causing printing damage. I recommend using a piece of tape to link the belt; when pulling the filament, you'll see that the force is low with this solution (ropes can also be used). Keep in mind that this holder cannot completely replace a filament guide as lateral forces applied on it are limited. This solution is a complement to your existing guide. Enjoy!