Blue Celadon cone 10 [Pinnell Blue Celadon (rev. 1)]
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
You guys still use barium?
ReplyDeleteYes. 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.
ReplyDeleteThanks, John! That's a good idea. I've always thought the clay content was a bit high.
ReplyDeleteIt is a great glaze but I just got irritating crawls intermittently on the rims.
ReplyDeleteNot 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.
Carolanne,
ReplyDeleteThe synthetic is the most pure. 99.0% vs 86% , 92% etc. Sample is Helios (grolleg ).