Small bobbin for the end of a filament

cults3d

I'm sure you've got some end rolls that are taking up space. So why not rewind them onto the much smaller reels? I propose a 45 gram spool (which allows you to know exactly how much filament is left) with a capacity of about 60 grams. The assembly requires 3 M3x8-10mm countersunk screws (in my case 2 in nylon + 1 in steel to be exactly 45 grams empty reel).