This is a simple remix of zxsix's remix (https://www.thingiverse.com/thing:4585786) of Lyl3's Universal Dual Filament Dragon Clip (https://www.thingiverse.com/thing:3757356) with inspiration from intofocus filament clip (https://www.thingiverse.com/thing:282242).

I had problems storing all my spools because the filament clip often snagged on another spool and came loose. So I wanted a solution where the clip was inside the spool. I also got a bit tired of putting my filament clip on the table and then not finding it again so I also wanted something that would automatically be on hand.

I liked intofocus' idea of having the clip threaded onto the filament but I found the clip side lacking. Lyl3's dragon clip on the other hand has always clipped on beautifully so I decided to merge the ideas with the minor adjustment that I used zxsix's version that does not feature 2,85mm.

I have used this system for some weeks and it has so far been working beautifully. It requires a bit of a knack to clip into place but once there it has been keeping the spools tidy very well. It might not work very well with filament that has severe kinks.

I printed mine in PETG with a 0,4mm nozzle and 0,2mm layer height.