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Moist Clay Molding In The Plastic Bags


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#1 Wilboy64

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Posted 16 May 2010 - 07:26 PM

I have several 25lb. bags of clay that I have had less than a month and when I go to get one out the clay is growing gray mold on it. Is this normal??? Can I add a mixture of Clorox / water to the clay to kill it? What is the normal way to handle this problem?

#2 Chris Campbell

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Posted 16 May 2010 - 07:46 PM

I have never had this happen with such new clay ... Call your supplier and ask them about it.
Doesn't seem right to me.

I have had clay for years and there is no mold on it.

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#3 hansen

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Posted 17 May 2010 - 03:36 PM

I have several 25lb. bags of clay that I have had less than a month and when I go to get one out the clay is growing gray mold on it. Is this normal??? Can I add a mixture of Clorox / water to the clay to kill it? What is the normal way to handle this problem?

Wilboy: That happened to me once too. I think I just wedged it in. Not all clays will grow mold certainly. I wonder why some does?
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#4 terraforma

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Posted 18 May 2010 - 12:53 AM

Mold is a common occurance with clays, and will not cause any problems in the final fired product - no need to add Clorox or anything else. In fact, in Japan traditionalists will age clay for very long periods of time (it's been said that the grandfather will set aside clay that the grandson will use), and the mold is a desirable indication of good aging.

No worries.
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#5 AndyL

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Posted 18 May 2010 - 10:06 AM

It's a normal thing to happen to clay that's aged. It's desirable IMO. Don't worry. It'll burn out and not effect your pieces.

#6 John Britt

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Posted 19 May 2010 - 12:13 PM

I have several 25lb. bags of clay that I have had less than a month and when I go to get one out the clay is growing gray mold on it. Is this normal??? Can I add a mixture of Clorox / water to the clay to kill it? What is the normal way to handle this problem?


I think that this is pretty common. Depends on the area and season of the year (various mold spores). Just wedge it and proceed. I think the Clorox would work to killl the mold but is hard on your hands.

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