filament holder
thingiverse
To accommodate a 32mm filament, modify the center hole on your Prusa i3 Spool single frame from its original 35mm dimension to 31mm.
Download Model from thingiverse
With this file you will be able to print 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 filament holder.