Fully parametric & fully printable spool spindle and frame.

The only things you'll need are cable ties, bearings, and maybe some M8 hardware. Supports 1kg spools with no trouble.

My first spool holder was a clip-on 608 bearing based roller-mount (see www.thingiverse.com/thing:16338), which worked great with the solid plastic Ultimachine filament spools. Since then, I've switched to using PLA filament from printbl.com, which is great stuff, but comes in cardboard-sided spools. The cardboard tended to get jammed between the roller-bearings and the clip, and to occasionally drop little shreds of itself onto prints in progress. This made me sad.

I looked around for a fully printable spool holder, but I couldn't find one that didn't at least use some kind of extrusion or threaded-rod framework. Rather than waste a couple of days for McMaster to fill an order for threaded rod, I spent a couple of weeks designing what I think is a pretty decent example of a fully printable, parametric spool mount. Pieces are locked together with cable ties