Filament Marker for PTFE Tubes

thingiverse

Yes, I understand that one can see what color of filament is loaded in which PTFE tube. However, distinguishing between red and magenta or remembering whether black PETG or black PLA was loaded on the master spool, especially when it's not clearly marked, can be a challenge. So, whenever I load new filament now, my first step is to print this small marker - it only takes around six minutes - and clip it onto the PTFE tube.