"Ed Huntress" wrote in message
et...
What kind of mold are you casting it in? If you're using plaster, it
chills
too slowly for ZA-8.

Was just an ingot in a sheetmetal mold. Probably was cooling too slowly,
but still. ZA-27 makes a nice and fine structure though, almost like a
hardened and broken steel surface! Heh, strength testing a button of the
stuff is what broke the cast iron drill press vice... Which reminds me, my
cast aluminum replacement is starting to crack up..(fatigue limit reasons I
imagine)..should cast a new one. To get back on topic, maybe I should cast
it with ZA-27..

Tim

--
"I have misplaced my pants." - Homer Simpson | Electronics,
- - - - - - - - - - - - - - - - - - - - - - --+ Metalcasting
and Games: http://webpages.charter.net/dawill/tmoranwms