Engine Valves

Engine valves from large engines, especially from airplane engines may be filled with with sodium. Should you try to forge a sodium filled engine valve, you will probably have a catastrophic event on your hands.

It is very difficult to differentiate those engine valves which contain sodium from valves that do not contain sodium

Best bet is to simply not try to forge engine valves at all.

-- AlbinDrzewianowski - 22 Jan 2009