I design primarily for the Interwar and WWII periods, and in 1:100 scale for 15mm gaming.
These days I print models almost exclusively in resin, but wherever it is feasible I design with tolerances suitable for FDM as well.
This was the standard British medium tank of the Interwar period. A few were used in Egypt at the beginning of WWII, but only as dug-in stationary bunkers to protect the border.
This 15mm model is designed for FDM printing, and is split into separate parts for turret, hull, and running gear.