I am considering building a nice small two cylinder steam engine to power a small open launch. Marcher being considered as a very prominent engine, I wonder if there are any other simple, easy to make and to use engines available? I have a lathe and milling machine at my hobbyroom, so machining of the parts is possible, but don't have very much experience about accurate machining. Of course the easiest way would be to buy a kit or even a ready assembled engine, but being a retired person I just cannot afford the prices asked of them.