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I likewise have never heard of any North American culture that was
into metal casting. When I was researching lost wax casting history
I never found any details on centrifugal casting any where. There are
any number of pictures in the Spanish literature written by the
priests that accompanied the Conquistadors that went into central
and south America and I know of no pictures showing sling casting
although there is a lot of beautiful gold casting work in the gold
museums of Peru, Columbia, Panama, and Costa Rica. I used a picture
of a casting from Columbia (that I purchased rights to) on the cover
of my book on casting. The museums often have descriptions of the
casting process that may not be correct. I have never determined how
they got the mold to fill without vents or a permeable investment.
(Any information out there?)
For a description of the use of lost wax casting for bronze statues
see the Autobiography of Benvenito Chelini (sp).
The Greeks were also very accomplished casters around 450 BC. There
were at least a dozen foundries in Athens and Bronze was the
preferred material for statuary although most of it got melted down
by the next tyrant or when they needed weapons.
The Chinese were somewhat later in using lost wax casting because
they were very accomplished in making piece molds.
At one time I was told that someone in England was writing a very
definitive history of lost wax casting but I have never heard that
the book was completed.
Fred Sias
www.woodsmerepress.com
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