small filament holder
thingiverse
small amount of filaments need to mount on 30mm spool holder. It is designed for convert inner size from 55mm to 31mm .
Download Model from thingiverse
With this file you will be able to print small filament holder with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on small filament holder.