Ravenscrag Cone 6 Floating Blue on porcelain and a red stoneware

Sunday 12th July 2015

The insides are GA6-A insight-live.com/material/32">Alberta Slip cone 6 base. Outsides are Ravenscrag Floating Blue GR6-M. The firing was soaked at cone 6, dropped 100F, soaked again for half and hour then cooled at 108F/hr until 1400F. The speckles on the porcelain blue glaze are due to agglomerated cobalt oxide (done by mixing cobalt with a little bentonite, drying and pulverizing it into approx 20 mesh size and then adding that to the glaze slurry).

Pages that reference this post in the Digitalfire Reference Library:

Cobalt Oxide, GR6-M - Ravenscrag Cone 6 Floating Blue, PC-20 floating blue with two alternatives you can make yourself, FLB - Floating Blue

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