On Mon, 19 Jan 2009 19:24:00 -0800 (PST), "
wrote:



Have you ever cast aluminum?

re my head suggestions in the other post....

I have to ask my edm owner to verify that this is possible.

in an ideal world I would cast everything castable and I would spark
erode the recesses to create the exhaust finning.

I'm not sure if spark eroding aloominum is possible but eroding
generally can do this sort of job with amazing precision.

Stealth Pilot