Summary

Based on my thing https://www.thingiverse.com/thing:4097072 but with replaceable pillars.
So you can use different colors for differents cones or replace if one breakes.
Use thread code from http://dkprojects.net/openscad-threads/ an and angle of 60° (instead of 30° for ISO).
Additional base plates will be added and maybe I'll add a lso a customizable version later.

For better stability of the pillars, I set the minimum infill to > 100mm2, so the pillar and the top of the stabilizer are filled completely.