On Thu, 20 Jan 2005 10:55:18 -0800, James Washer <washer@...> wrote:
put the container of silicone or whatever you want to use to cast. the
vacuum makes the bubbles HUGH and causes them to rise to the surface,
effectively de-gassing the liquid. then you take the liquid out and cast
with it.
Of course you can also vacuum the un-cured mold and pattern just after
casting if it fits into the chamber.
You can join <http://groups.yahoo.com/group/casting/> for more information.
I was looking into it a short while back, but decided it is too expensive
and i have enough stuff to do right now. But it opens a lot of
possibilities...
ST
>you don't vacuum the mold, you need a small vacuum chamber in which you
> Ron,
> thanks for providing this... but can you provide a bit more info?
> Any "name brand" silicon I should buy?
> I have a vacuum pump... but I cannot figure out how I would attach it to
> a rubber mold.. would that just collapse the
> mold?
> Do you have any pictures?
> - jim
put the container of silicone or whatever you want to use to cast. the
vacuum makes the bubbles HUGH and causes them to rise to the surface,
effectively de-gassing the liquid. then you take the liquid out and cast
with it.
Of course you can also vacuum the un-cured mold and pattern just after
casting if it fits into the chamber.
You can join <http://groups.yahoo.com/group/casting/> for more information.
I was looking into it a short while back, but decided it is too expensive
and i have enough stuff to do right now. But it opens a lot of
possibilities...
ST