Filament Spool Holder

You'll need 1 1/8" wooden dowels cut to length. the top dowel needs to be about 3/4" longer than the two base dowels.

it will be a snug fit!

to get the dowels to protrude a bit (purely for aesthetics), place something between the work surface and the part to hammer the dowel in past the part face. I've included a spacer stl that I used, but its optional.

I've included the CAD models (filament-holder.stp) in case you want to adapt it for different sized dowels