Small spool for 30 meters of filament.

This is a small spool designed for small amounts of filament. Everyone should have one because leftover filament is common. This is my own model, and I hope you find it very convenient. The walls are 3 millimeters thick, and you can use it as much as you want.

To use, slide both parts together. Both parts have a deviation of 0.2 millimeters. With some printers, it is essential to trim a few edges. If it does not stay in place, you can apply a little superglue to the guides.