Spool Holder for ProtoParadigm's five dollar filament
Stabilizes the spool while printing. The hubs on both flanges thread together and clamp the center hub of ProtoParadigm's filament bobbin to hold it securely while printing.
38mm ID x 120mm OD flange
The quarter turn version of this spool holder can be found here: http://www.thingiverse.com/thing:2121407