John Baymore on wed 25 sep 02
>>Hmm.... not long ago I'd have agreed with you. Then I came across Tom
>Coleman's Royal Cobalt. How much cobalt carb?
>A very fine cone ten glaze, too. Sumptuous, classy and jewel-like.
Ned - guess I've learned something! I have no argument with you. I had
never experienced a use of cobalt above even 0.75%.<
Never actually seen the above glaze in person........ does it have a
tendency to have little semi-gloss or matt-ish microcrystaline stuff on t=
It would be interseting to see a leach test for cobalt off that five
percent plus containing glaze. Anyone ever done it by any chance?
River Bend Pottery
22 Riverbend Way
Wilton, NH 03086 USA