First:
I did NOT design the bases myself. I just added holes for magnets. You can find the original ones by “brexit” here:
https://www.thingiverse.com/thing:3012828/files
Every base should have a magnet on the bottom. Why?
All of this bases use standard 10x2mm magnets, aside the 25mm base which uses a 5x2mm magnet because the big ones are to strong for the small bases.
The big bases can hold more magnets for enhanced security.
The Squad-Holders use 15mm metal plates, 10mm magnets for the bottom and the sides, as well as 5mm magnets for the top.
More Versions (25mm and ovals) will be added.
Confused? All you need is:
All holes have 1mm clearence.
Supports only needed for the squad-holders.
The author remixed this model.