Jacquelyn Lumsden on wed 29 jan 97
Hi from Waterloo Ont.
This past summer a group of about 10 of us did a big testing at cone 8 in
oxidation, of a basic feldspar glaze with the addition of 2 opacifiers,
tin and titanium. We liked the tin glazes best but the straight blue group
was very strong and not too attractive. Are there any suggestions out there
for combinations of oxides to give an nice warm middle blue in a tin
-feldspar glaze? We also tested copper, nickel and red iron in 2 different
strengths so had a lot of tests to peruse!
Waiting in anticipation!
Jackie Lumsden at the Waterloo Potters' Workshop in Waterloo, Ontario, Canada
Ron Roy on thu 30 jan 97
>----------------------------Original message----------------------------
>Hi from Waterloo Ont.
>This past summer a group of about 10 of us did a big testing at cone 8 in
>oxidation, of a basic feldspar glaze with the addition of 2 opacifiers,
>tin and titanium. We liked the tin glazes best but the straight blue group
>was very strong and not too attractive. Are there any suggestions out there
>for combinations of oxides to give an nice warm middle blue in a tin
>-feldspar glaze? We also tested copper, nickel and red iron in 2 different
>strengths so had a lot of tests to peruse!
>Waiting in anticipation!
>Jackie Lumsden at the Waterloo Potters' Workshop in Waterloo, Ontario, Canada
Hi Jackie,
Iron, titanium, rutile and nickel will all tone down your blue - I suggest
keeping the cobalt carb at 1/4 of one percent to start with.
Ron Roy
Toronto, Canada
Evenings, call 416 439 2621
Fax, 416 438 7849
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