NEW: Hadar’s Clay™ Quick-fire Copper

As I promised when I started this blog, I have been constantly working on improving the firing schedule, especially trying to shorten the firing time and minimize the use of carbon.

After a long series of experiments, I’ve finally been able to come up with copper clay that does not require carbon at all. This product, too, comes in the form of an easy-to-mix powder. Everything, including the consistency, is the same as the traditional Hadar’s Clay™ – Copper, except for the firing schedule. The new Hadar’s Clay™ Quick-fire Copper is fired half an hour on a kiln shelf or a fiber blanket. Small pieces can also be fired with a torch. To see all three firing options please download the firing schedule for Hadar’s Clay Quick-fire Copper by clicking the link in the right-hand pane of this blog.

This is how the copper looks after it has been dipped in water (no pickle necessary). The oxide layer comes off quickly and completely. The shiny parts on the the huge piece on the left are the result of hammering.

The clay powder is now available for sale on my Online Store. The package size and price are the same as for traditional Hadar’s Clay™ – Copper.

In the center piece in photo below, my Quick-fire Copper clay was torched-fired over fired steel clay.

For those who prefer the traditional Hadar’s Clay™ – Copper, it is still available on my Online Store.

I am continuing my quick-fire experiments with other metals as well. I will, of course, post my results as soon as I am sure of them.

10 Responses to “NEW: Hadar’s Clay™ Quick-fire Copper”

  • Cindy Says:

    This looks cool – I worked with the new ArtClay Copper last night (12/3) and it definately needs pickling to remove the fire scale. The fact that yours does not is very very interesting!!

  • linda vaughn Says:

    Hadar…you are a genius. I can’t wait to see how this enamels? I will be back as soon as I can.

  • Jackie Schubbe Says:

    Thank you so much for developing this. I HATE firing in the carbon. Can’t wait to try this.

  • ann schneider Says:

    Amazing! I don’t know when you must sleep!

  • TinaG Says:

    Do you have to quench it? Can you just leave it in the kiln to cool down naturally?

  • Hadar Jacobson Says:


    There are 2 ways to fire it in the kiln. One of them allows you to leave it to cool in the kiln. In any case, pickle is not necessary, just water. I’ll post all about this soon.


  • Shauna Says:

    Hadar, does this shrink about 10% from green state through firing? Thank you!

  • Hadar Jacobson Says:


    I’d say it shrinks even less than 10%. And from wet to dry clay it doesn’t shrink at all. It also doesn’t warp when it dries.

  • Jennifer Says:

    Hi Hadar

    I found this post while looking to see if there was a single phase option for firing any of your clays, but the link for the firing schedule mentioned here isn’t functioning, and I can’t find it in the instruction manual. Can you tell me if there is a reason not to fire it this way, and if not, can you post the temperature for this particular schedule? Oh, and are any of the other quick-fire clays capable of a single phase firing? I don’t mind the carbon so much, but shortening the the kiln time would be awesome. Thanks!

  • Hadar Jacobson Says:

    Jennifer, It fires at mid-fire schedule, just like regular bronze. There is no single-phase schedule, but instead of the first phase you can burn the binder on a stove top. It shortens the process. Please open both manual instructions from the tight pane of my blog.

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