Biqu B1 filament spool limiter
thingiverse
Helpful to prevent the spool to fall, and also when you are printing with a short piece of filament without a spool (see pics attached). I recommend you to print it with 100% infill, since it adds just a little in time and material but delivers a solid part with good mechanical properties. Internal diameter: 41mm External diameter: 100mm Total height: 20mm
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