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Don't be scared by the thought of 1400 degree aluminum!!
I have built a furnace and have started pouring ingots, the first step in cleaning up the scrap metal. I caution against collecting mounds of aluminum cans. The dross and slag is more than the amount of aluminum in today's cans. Go see your local auto repair shop for pistons, water pumps etc.
Seriously, Lindsey has some very good technical books for filling in some of the additional information you need.
I made my first pour about 20 years ago with a good friend, Roger Richard (His brother Jim is an engineer for the Kilowatz). You will find his name at the Bourke.com website as he built the first working prototype of this engine since the inventor built his in the 50's. We used the lost foam process which does not require casting sand, just regular play sand.
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