Mr Bergman designed the bulk of the WW1, WW2 and modern vehicles with all tips and license fees 100% donated to the MS Society of NZ. You can purchase his STL files here : M Bergman
Mr Andrew Gill has a selection of 1:300 boat and ship designs which he has given me permission to make. Grugnog
Deweycat productions has vehicles, boats and scenery which is designed for 28mm games and I scale down to 15mm. I have a license to make his designs. You can purchase his STL files here : Deweycat Productions
TigerAce1945 has mainly world war II files with some unusual models. These are mainly multi-part models and will need some assembly. You can purchase his STL files here : TigerAce1945
MikeE has a small selection of 1:300 boats and misc items and the commission is donated to charity.
You can find his files here :MikeE
I make mostly 15mm, but if you require a different scale or a vehicle not in stock, then contact me for pricing and if I am able to produce it. I will try to reply as soon as possible.