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.
The Hawker Hart was the RAF’s best and most effective light bomber of the 1930s, being substantially faster than any of the biplane fighters in service at the time (such as the Bristol Bulldog, for example). It was so good that a single-seater fighter was developed using pretty much the same airframe, the Hawker Fury, and the first biplane fighter to break the 200 mph barrier (223 mph (359 km/h) at 16,500 ft (5,000 m).
Neither the Hart nor the Fury made it into WWII except in a very small way. The Hart was used by the Rhodesian air force against the Italians in Africa.
The model comes in two versions: a one-piece model, and one split longitudinally to be printed in two pieces and glued together. The two-piece version includes positioning sockets, into which you can put short lengths of 1.75mm filament, to ease the alignment of the two halves.
I’ve found that tilting the one-piece model on to its nose at about 45 degrees gives the cleanest printing results.
I’ve printed it successfully scaled down to 1/144 scale, but the struts and tail surfaces are too thin to go any lower than that.