Combining Copper Clay

It occurred to me a couple of days ago that I should try combining the regular Copper Clay and the newer White Copper Clay so that’s just what I did. I had it in my mind it might look a bit like Shibuichi and I think with a little more practice it will.
Please excuse the terrible quality of the work in progress photos,
 the lighting at my work station is not intended for photography.
I started with something very simple,
 lay a sheet of copper on top of a sheet of white copper and make a jelly roll.
I remembered way in the back of my brain from a class long long ago that when combining clay like this you should have one a bit thicker than the other. I chose to make the White Copper clay the thick one. I made it 7 cards thick and the regular Copper Clay 4.

Take slices from it and flatten them out.
I would roll one direction then turn it and roll the other direction,
I was not aiming for a perfect circle.
I made these 4 cards thick, I think next time I might go for 3 cards thick.
For those who might not know what I’m talking about
we measure clay thickness by using regular playing cards.
Tape 2 cards together, tape 3 cards together and 4 cards etc. 
Personally I use almost exclusively 3 or 4 card thicknesses, if I need more I just stack them on top of one another.
Here they are dry and almost ready for the kiln!
Just have to decide where to put the holes.

 And below here they are out of the kiln.
I LOVE the result

I love the way the metals alloyed to create a t least one more color,
exactly what I was hoping they would do.
My favorites of the finished pieces.
The things I would do differently next time I try,
Make sure the 2 pieces of clay have a solid connection to avoid the cracks
Not that I mind the cracks but I think a little more care would improve the end result.
Copper……Mixed Copper/White Copper….White Copper
I took the unusable ends of the jellyrolls and mushed them together.
I love the resulting color so I’m going to experiment more with mixing the 2 clays
 together to form this wonderful gray.
I’ll be playing with the recipe to try to get a more distinct color.

Kristi Bowman

Kristi Bowman has been working with Precious Metal Clay since 2008, she's moved from Silver to Bronze now Copper.    She's been dabbling in various forms of art most of her life but only recently really made it part of everyday life. A little bit of Polymer Clay has recently been added along with some Enameling and Pewter Casting and many other art forms she hasn't quite found the time to play with.
  1. Reply

    Aw fantastic! The more I read about copper clay on this blog the more I am convinced I wanna give this a go! I love this rustic, agate slice effect that is achieved by the mixing – genius!

    • Reply

      Thanks Ellen!! They do look like agate slices, I didn't even see it.

  2. Reply

    Those are really cool! the silver ( white copper) medallions in the last pix? YUM!

  3. Reply

    so fancy, I love it

  4. Reply

    Those are really pretty and unusual. I love them.

  5. Reply

    Love those, Kristi!

  6. Reply

    Very cool–I like the "jelly roll" effect AND the cracks. I can't wait to see what new things you come up with!

  7. Reply

    Awesome, Kristi! To me they look like slices of petrified wood. Very natural looking because of the cracks.

  8. Reply

    They are gorgeous

    • Cherry
    • April 25, 2017

    How do you fire a piece with finished sterling silver attached to white copper? Fire again at white copper setting? Will this melt the sterling?

    • Reply

      Hi Cherry – Kristi no longer writes for this blog but I don’t believe you can fire silver and copper clay together as copper fires above the melting point of silver. I think you would have to solder the pieces together.

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