Have a '37 Brazilian. Need to read thru the recommendations here for guidance!
Heaven.Some years ago, I had a contractor friend build me a 20x12 utility barn. One end has a dedicated casting area. I had the building insulated, installed 220 volt electrics with a electric wall heater and cut a hole in a wall and installed a window air conditioner. I also installed a range hood to ventilate when casting. It works perfectly in both hot and cold weather.