Blue Celadon cone 10 [Pinnell Blue Celadon (rev. 1)]

Blue Celadon cone 10

24.75 Custer Feldspar
34.65  Silica
19.80  Whiting
  9.90  Grolleg
  8.91  Calcined Grolleg
  1.98  Barium Carbonate


Add 1.0 Tin Oxide
        0.5 synthetic iron oxide

Fire in the R1 cycle in my book or reduction from 010 to peak.

I took Pete Pinnell's Celadon and since it crawled on me a bunch, I calcined half the Grolleg and came up with this.


johnbrittpottery.cpm

Comments

  1. You guys still use barium?

    ReplyDelete
  2. Yes. That glaze has very little barium carbonate and I had it tested three times with very low release levels. You can use a liner without the barium if you like.

    ReplyDelete
  3. Thanks, John! That's a good idea. I've always thought the clay content was a bit high.

    ReplyDelete
  4. It is a great glaze but I just got irritating crawls intermittently on the rims.

    Not sure how this will work but it was a nice blue, not as transparent.

    I will have to fire it a bunch more to see how it performs.

    ReplyDelete
  5. Carolanne,

    The synthetic is the most pure. 99.0% vs 86% , 92% etc. Sample is Helios (grolleg ).

    ReplyDelete

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