Mini spool

thingiverse

I needed a compact spool for all the filament samples I have. Needless to say, samples arrive in various sizes and shapes. With my spool holder (https://www.thingiverse.com/thing:3006303), it is impossible to print sample filament due to limited space and reusing big spools can be painful when trying to store them dry. So I designed this mini spool. It has two sides, one with a smooth surface and another side with a small compartment for a label. The orientation doesn't matter as long as you have a pair of matching spools. The fit is extremely tight, so light sanding may be necessary. Due to the tight fit, no adhesive is required. The spool's outer diameter measures 160mm, and the filament begins winding at a diameter of 90mm.