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plaster silica

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Dick
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Joined: Sun May 01, 2005 9:34 pm
Location: San Diego
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plaster silica

Postby Dick » Mon Mar 23, 2020 2:34 pm

HI all. I usually use r and r but the new forms will get so much cold working I can get by with plaster silica. I know mixes like r and r have a shelf life. How about plaster silica? does it matter if they are mixed or separate? I have an old bag of silica and would like to mix it with new plaster but would like some info first

thanks

Don Burt
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Joined: Sun Mar 09, 2003 8:45 pm
Location: Cincinnati, Ohio
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Re: plaster silica

Postby Don Burt » Mon Mar 23, 2020 8:21 pm

I just used silica that's at least five years old with some new #1 pottery plaster, 50x50 and it set and dried nicely. The silica was stored in pretty stable conditions in a plastic bag.

Don Burt
Posts: 536
Joined: Sun Mar 09, 2003 8:45 pm
Location: Cincinnati, Ohio
Contact:

Re: plaster silica

Postby Don Burt » Mon Mar 23, 2020 8:27 pm

Plaster relief molds
Image

Dick
Posts: 82
Joined: Sun May 01, 2005 9:34 pm
Location: San Diego
Contact:

Re: plaster silica

Postby Dick » Tue Mar 24, 2020 12:21 am

Thanks Don, I appreciate the info.

Dick


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