Stores nicely and easily mixes
"It is nice not worry about the clay drying out and it mixes so easily with the spray of water."
US orders of $150 or more ship free! | Orders placed M-F before 12 CT ship same day!
SKU:CPR-005
Made in USA
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Kiln Fire (Muffle Type): 1100°F / 593°C - 2 hours
Shrinkage - 25-30%
One-fire Copper is high-fire clay, suitable for both beginners and experienced users of metal clay. This variety of Hadar's Clay is fired in one phase only, both on its own and in combination with Champagne and Dark Champagne Bronze, and Low-Shrinkage Steel XT.
The powder is already mixed with a binder and all you have to do is add water. The advantages over pre-mixed clay are that you won't have to worry about shelf life, and that you can easily bring the clay to the desired consistency. Since it contains no preservatives, the clay is very forgiving, soft, pliable, and sticks well to itself. It mixes quickly, with no mess.
Click here for Hadar's One-Fire instructions
Made in the USA
Hadar Jacobson recommends using only olive oil as a metal clay conditioner and/or release for her products.

Metal clay is a unique jewelry making material that allows you to shape real metal by hand, just like clay. In this video, we explain exactly what metal clay is,...
Metal clay is a unique jewelry making material that allows you to shape real metal by hand, just like clay. In this video, we explain exactly what metal clay is,...
Overall rating: 5.0 / 5 from 9 reviews.
Review topics: ["shipping","results","hassle","amount"].
"It is nice not worry about the clay drying out and it mixes so easily with the spray of water."
— Sue F. (5/5)
"I love the shrinkage amount. Easy to work with"
— Vanessa M. (5/5)
"I love the shrinkage amount. Easy to work with"
— Vanessa M. (5/5)
"I've used this clay for years and get consistent results."
— Phyllis L. (5/5)
"I've used this clay for years and get consistent results."
— Phyllis L. (5/5)
"So far i have used cooltools three times and each time is fast and complete. No hassle so far. I will continue to use them for my PMC and art needs. Thank you!"
— Robert A. (5/5)
"So far i have used cooltools three times and each time is fast and complete. No hassle so far. I will continue to use them for my PMC and art needs. Thank you!"
— Robert A. (5/5)
"Love it. Fires consistently and very easy to work with"
— Phyllis L. (5/5)
"Love it. Fires consistently and very easy to work with"
— Phyllis L. (5/5)
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