Base Thickness size...

[Freddy]

I have three scales:

15mm I only use for Team Yankee, there I use the TY squad bases made with the "the lower the better" philosophy.

For 28mm I use the standard GW bases, rectangular for fantasy and (pre-1850) historical stuff, round for scifi. You do not have to buy them from GW or other gaming companies, you can order big packages of them dirt cheap from China in any size. I like them because I use the rim colouring for marking factions, also in some games (Infinity) I can easily add facing markings.

For my 1/35 figures I use 2,5mm mdf bases. I try to go for the as-low-as-possible (a lot of figures are multi-faction, so "rimjob" is not practical) , but the base shall be tall enough to hold the figure by its wire pins, 2,5mm is just a good compromise.

For both 28mm and 1/35 I use mdf movement trays cut from the same 2,5mm mdf (in two layers: one to hold the figure and one base), It works just fine with both types of bases I use.

[syrinx0]

Depends on the scale and manufacturer.  If the miniature has an integral base I will use a 1mm and blend it in with putty.  Most of my 28mm figures are on 3mm bases and all my 15mm are on 1mm.

[snitcythedog]

My personal preference is 1mm round bases in a variety of diameters.