On Tue, 26 Oct 1999, ferrotto wrote:
> Hello Rp list,
> we have a 3d printer of Zcorp and we need more info
> about the lost-wax method associated wiht that printer.
> We want to use this method for alluminiun component in
> automotive engineering .
My experience has been that investment casting doesn't work perfectly
with wax- and resin-infiltrated ZCorp models: the burnout is not hot
enough to fully destroy the material. If your parts are shaped so
that residue can be blown out of the mold with air after the burnout,
that helps a lot.
That said, my parts aren't blowable and they're all cast with
investment, so to some extent you can get away with it. I lose a
percentage due to incomplete burnout, and I don't always get very
clean surfaces, but it's still a viable method.
Ceramic shell casting is said to work better. I had an art founder do
a couple of parts that way, and we had the same ash problem as with
investment, but it wasn't what you'd call a controlled situation. So
that's probably not a good example.
-Sheba
Bathsheba Grossman (831) 429-8224
Digital Sculpture http://www.bathsheba.com
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