I seem to remember a Clayarter was looking for a version of Floating Blue
with little or no gerstley borate. I've used the recipe below with
consistently good results:
^6 oxidation
Frit 3134 32.8
Neph Sye 43.3
EPK 13.7
Flint 10.3
Add:
Cobalt Oxide 1.00
RIO 2.00
Rutile 4.00
Bentonite 2.00
