I’m still working on the design of my 3D printed spindle. I’ve now had a local printer make up three sizes, and have tested them all with the same fiber blend.

We aren’t there quite yet. I need some input from other spinners, and we need to change the printing density to reinforce the neck. The smallest version has never broken, but the hole in the yarn ball is too small. The largest has a great diameter hole in the cop of yarn, but is unwieldy. The middle one is the closest to feeling right, but still needs some adjustments.