Model Making in 1943

 This seems very laborious as it suggests casting and firing single scale bricks. I do remember using Pyruma although I wasn't around in 1943.  I did once make a small Welsh slate building at 1 : 72 scale from slate chips. I filed these smooth to form an outer face then constructed the building stone by stone.  It looked superb and I can't imagine a more realistic method of achieving the same result. Imagine how long it took !