Saturday, March 5, 2011

Amber Waves Of Glaze

A number of factors play into the color: What clay it's over, glaze thickness, temperature, all matters.

This is my latest use of the glaze -- my new pine cone topped casseroles.

This photo is deceiving. This was a BIG bowl -- maybe 14 inches in diameter.

Note the redder appearance? I figured out I could get all kinds of different colors if I first sprayed the porcelain with my oribe glaze -- basically coat it with lots of copper.

These were some of the bowls I did for the Goshen Empty Bowls a couple of years ago. One third were lined in oribe, one third in cobalt, and one third plain.

Celadon is hard to photograph, but again you can see the depth of color added when sprayed with oribe glaze first.

Out in the bright sunlight.

12" diameter and then cut to follow the stamped pattern. Lined with oribe...the glaze was a bit thin.


  1. What is the oribe glaze? It looks beautifully dark and luscious! I have one similar that takes 15% of yellow ochre !!

  2. love the bowl with the cut rim. very subtle and beautiful.

  3. It IS a nice glaze. Here's the recipe if you are interested. If you substitute Alberta or any other Albany Slip substitute, you will just get a green celadon.

    Ohio Slip 330
    Custer Feldspar 200
    Wollastonite 130
    Gerstley Borate 30
    Whiting 70
    EPK 30
    SIlica 130
    Yellow Ochre 70

  4. Oh, and an oribe glaze is a glaze that's VERY high in copper -- usually it ends up with an almost iridescent, transparent, dark green surface.

  5. Thanks for the recipe. I'll have a try in the next glaze firing, any day now
    Do you mean sub for the Ohio slip?
    What does the GB do in the glaze? It isn't something I'd normally use

  6. Since you don't have access to Ohio Slip, you can try whatever "self glazing clay" like Albany Slip is available. I've just noticed that the subs available on this side of the pond make a nice glaze -- but it's definitely NOT amber with the other substitutes. It IS amber with Ohio Slip and with the now extinct Albany.

    As far as Gerstley Borate: I think the British equivalent was Colemanite, but I think that may be extinct as well. Here's a discussion of substitutes that might be useful:

  7. I was wondering if there was anything without Boron that would do it. I googled and found the old threads on clayart.
    GB provided much calcium and sodium if I remember rightly, too.
    I think Colemanite is still available-I've used it before and it was a nightmare!!