mm3SpoolHolder

Wanted to have my spools on bearings but also like the MM3's OE spool holder. This is a very V1 attempt at a spool holder that works like a tire balancer. Two cones hold the spool allowing for a slight variance in the ID and the width of the spool. I measured the few different spools I had on hand to get the parameters, can't remember what they were now. Filaments.ca and MTW spools fit like a dream. One could mod the cone shape easily to tailor it to their spools.

One cone is on a threaded shank, the other on matched threaded nut. Two 608 bearings keep the shank aligned to the M8 bolt that comes with the MM3. It's currently sized to work with the two jam-nuts that come with the MM3 kit, but it could be a bit cleaner with some small spacers that only contact the inside race of the bearings.

The knob on the nut is a bit massive, but it feels great to turn and gives you a nice bit of torque to mash the threads tight. Makes loosening easy too. (and it looks neat-o.)

NOTE: I'm not