[casting] Digest Number 3396

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1a.

Re: Making my own vac chamber From: David Bentley

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1a.

Re: Making my own vac chamber

Posted by: "David Bentley" bentley@kctc.net   goldwing_1992

Fri Feb 1, 2008 5:50 am (PST)

I would be interested in your Pressure Cooker vacuum system (and pictures).
Like the design on the Ted Pella but don't need something like that as I
will not be doing to much mold making

Bentley@kctc.net

Thanks

David

Iowa

-----Original Message-----
From: casting@yahoogroups.com [mailto:casting@yahoogroups.com] On Behalf Of
The Loewen's
Sent: Saturday, January 26, 2008 12:03 PM
To: casting@yahoogroups.com
Subject: Re: [casting] Re: Making my own vac chamber

I had one made from an old pressure cooker. Took an old bicycle tube and cut
a gasket out of it for the lid to seal and drilled a hole in the side of the
pot for the tubing/guage and used a piece of 1/2" lexan for the lid. It
worked well enough to degas the rtv I was using and for some molds. I have a
picture somewhere if you want me to email it to you. It was a 12" pot about
8"s high. The lexan and the guage was all I had to buy. I have since bought
one from http://www.tedpella
<http://www.tedpella.com/desiccat_html/vacpoly.htm>
.com/desiccat_html/vacpoly.htm We'll see how well it works.

Kent

----- Original Message -----
From: Stephen Auslender
To: casting@yahoogroups <mailto:casting%40yahoogroups.com> .com
Sent: Saturday, January 26, 2008 11:46 AM
Subject: [casting] Re: Making my own vac chamber

What happened to the old idea of using a kitchen pressure cooker as
a vacuum chamber?
They were made for pressure.
Stephen
--- In casting@yahoogroups <mailto:casting%40yahoogroups.com> .com, "Rich"
<fl_rider2001@...> wrote:
>
> Gabe,
>
> I would be very, very careful in making your own vacuum chamber
having
> experienced an implosion of a purchased one. luckily I got my
hearing
> back in about 5 min and the ribs that were broke did heal. For low
> vacuums I do use a similar unit, but for the higher vacuum needs I
am
> using a pressure pot that was converted to a vacuum chamber.
>
> Good luck if you build your own, I would be sure not to have it
near
> you when you first test it.
>
> Rich
>
> --- In casting@yahoogroups <mailto:casting%40yahoogroups.com> .com, "Gabe"
<wizatlarge@> wrote:
> >
> > I found a design, here on the group, that seems easy enough for
even
> > me. I will need some Schedule 80 pvc pipe, about 12 inch
diameter.
> > Does anyone have suggestions on where I could get some of that
pipe?
> > I would like it to be about a foot or so tall.
> >
> > Also I'm going to need some thick plexi or even better, some
lexan. I
> > think the lexan is pretty expensive, although I haven't checked
yet.
> > Any ideas on where to get that?
> >
> > Finally, I'm also going to need a vacuum gauge. Who knows where
to
> > get that?
> >
> > Thanks for your help.
> >
> > Gabe
> >
>

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[Non-text portions of this message have been removed]

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