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Old 12-22-13, 12:03 PM   #1
Allen
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Anyone know about slip casting porcelain

I want to try mold some porcelain. Anyone do slip casting back when they were in school, or otherwise.
So far I know as much as I can glean from YouTube.
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Old 12-22-13, 05:39 PM   #2
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When I got back into working in clay a couple of years ago the studio I was using was an "all white" clay establishment, the owner works almost exclusively in porcelain.. I mentioned being interested in doing some slip casting and was told that there are clay bodies designed just for that and the throwing clay in the studio probably wouldn't work out very well so I didn't pursue it.

That's all I got.
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Old 12-22-13, 05:48 PM   #3
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Make a mold from Plaster of Paris......
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Old 12-22-13, 06:03 PM   #4
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Make a mold from Plaster of Paris......
Getting the kiln after the first.
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Old 12-25-13, 03:02 PM   #5
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...I spent a year in the MFA ceramics program at U Minn, but i was doing glass.

The deal with porcelain clays is not that they are difficult to form or cast, but
that they require firing to very high temperatures in order to get the vitrification
that you need to produce translucence. And the higher you fire stuff, the rate
of collapses, cracking, and various other failures increases....so until you get
good at it, you can expect some aggravation.

Like I said, I was a glass guy, not a clay guy.
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Old 12-25-13, 04:56 PM   #6
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I blew glass in college too. That was a gas! If I could afford it, and lived in a lot cooler climate, I would do that again.

Allen, here's a link for you: http://www.plainsmanclays.com/index.php?menupath=6
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Old 12-25-13, 05:22 PM   #7
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I worked for 12 years for a company that made electrical porcelain. We didn't do much casting. Mostly we dried the slip then machined it on lathes, or we pressed the clay in ram presses, then dried it and fired it.
I used to smoke a little bit of the green back in those days. We used to carve pipes and roach stones out of the dried clay then hide them on the kiln cars for firing.
Yea, I know a little bit about working with porcelain.
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Old 12-25-13, 11:05 PM   #8
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We are getting a cone 10 kiln at work. Between job orders I get to have free reign with it.
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