KNRLR - a tool for making knurled bolts which are actually spiky (Q69333)

This nice thing attaches to your Dremel and lets you make your own M8 knurled bolts for your extruder. Technically speaking it's a "spiked" bolt, not a knurled one, but it's close enough. :) And yes, the name is supercheesy, but I like it anyway. I made this because the standard Ultimaker knurled bolt doesn't fit the extruder I'm currently designing. It's modelled in 3dsmax, so no openscad files, sorry :( If anybody wants to make a parametric version be my guest.