lili krakowski on sun 24 jan 10
As I know nothing about computerized kilns etc I can only suggest you =3D
lower the alumina content of the glaze.
Fournier) tends to volatilize. He also say copper carb will decompose in =
hot water...just a minimal point in case you mix your glazes in hot =3D
water--and I have no idea what the decomposition would lead to.
Cooper ("Electric Kiln Pottery") says that copper starts to volatilize =3D
at around 1922 F (around c.04) and I have no idea whether your cooling =3D
cycle can affect that...
Calculations by GlazeMasterT
So, following instinct (duh!)
28.7 Frit--Ferro 3195
9.5 Frit--Ferro 3110
I would expect the lowering of Alumina and raising of B203 to help =3D
matters. If it crazes you can try calcined kaolin and some 2-3% =3D
Be of good courage