wrote in message
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On Jan 12, 8:58 pm, "Maxwell" #$$9#@%%%.^^^ wrote:

Do you have any examples of something being cast as
complex as an air cooled cylinder head? Coffee cups, duck decoys, and
alike
are useful items, but hardly good examples for the task at hand.

You ever heard of something called an internet search engine? Try
Google, Yahoo, Altavista, Ask, or Dogpile. (add a "dot"com to the end
to make 'em work)

Examples of lost foam casting of the complexity required are quite
common.
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You're the one that quote them, and you're the one that insists examples of
such are quite common. So where are they?

I have seen a lot of foam, wax and sand casting, and never seen process that
would let you whip up a simple foam investment of something as complex as a
VW head, and cast it at home. Nor am I interested in reviewing all the "make
a furnace and cast a slug at home" examples strung out all over the
internet. Anyone with a propane tank and a hair dryer can melt metal. Anyone
with a shovel can mix up a home made sand that will cast an ash tray.

Casting your own VW head can be done, but it's not nearly as easy as you
would like to suggest. If you have examples to the contrary, as I said
before, I'm not the only one on this news group that would love to see them.