K8400 VERTEX Universal Spool Holder

I tried to put together the best design elements of few other spool holders published on this website and created my own universal spool holder for K8400. It can hold spools with hole diameters from 30mm to 62mm. The maximum spool height depends on the hole size - the wider holes allow to fit higher spools. With maximum hole size of 62mm, spool height can reach 120mm.
For this holder I designed my own thread with 45 degree sides that allow printing it clean without support.
The holder is att