Filament Holder

filament holders, 2 designs

v2
The clip doesn't hold very tight, it can move around the spool. Wherever the end of the filament is, you can drive it to there.

Pretty handy for the waiting spool.

v3
Very simple design. Just paste it.
More usefull if filament spools are stacked on top of each other.

I designed it according to esun filament spools.