A sturdy spindle high enough to handle large bundles of yarn for respooling.

Some tools, like tufting gun, requires uninterrupted yarn flow without tension, which is easier with conical bobbins of yarn. This spindle is designed for respooling of any  yarn bundle onto it as a bobbin.

It has pretty wide inner diameter since i designed it around wooden spinning axle that i have. If you need other diameters - ask and I’ll probably make it. Anyways, STEP file is attached.