Put a horizontal dowel on a printed case Tantillus for holding loose filament. This takes the place of the spacer washers on the front stiffener just like the side fan mounts. Any sort of 5/16" or 8mm rod can be used, but wood dowels seem to be a good option as they're cheap and will probably break before the mount will. The dowel is friction fit so that it can be easily removed for travel. SCAD provided so you can change up the dowel hole size or use it as a base for mounting other stuff to a printed Tantillus.1) Print as oriented 2) Replace the washers with the mount on the front stiffener so that the dowel mount sits on top of the stiffener 3) Insert 5/16" or 8mm dowel in the hole. Can be as long as you wish 4) Space two binder clips arms-up to keep the filament on the dowel 5) Put your filament coil between the clips and load the end into the Tantillus 6) Print more stuff