Copper boiler scratch build project. - The Unofficia
Copper boiler scratch build project. Kmot. 1,190 12. Steam fanatic. Kmot. 1,190 12. Post Feb 07, 2011 #1 2011-02-07T06:05. I read about this in a book titled "Making Simple Model Steam Engines". I annealed the end plates on top of my kitchen stove, and supplemented the burners with a propane torch.