This thing is a vertical mounting spool holder for the Ultimaker3 that can be mounted on its sides.
It's a self derivative of my own previous BfB3000 vertical spool holder.
Only the hook has been changed (green part on the picture). So you will also need to download the other part (shown white) from my original work.
For details (print settings, etc.) see the description provided in my original work.
Anar
