Kate Johnson on fri 10 dec 04
Hello all, the supplicant is back with still more questions...you'd think
with all my new books I'd have more ANSWERS!
I'm experimenting here, and I know that's a marvelous way to learn,
but...trying out marbling and feathering in the 18th and 19th c. styles,
with two colors of slip on redware...I thought that mixing the dark brown
Arroyo slip with black oxide would give me a gorgeous dark contrast with the
white slip.
But, it fired (wait for it!) red-brown, yet again. A darkish red-brown, but
still...not much contrast to the fired terra cotta clay, and NOT what I
expected. Do I need to add cobalt to the mix? I know that does make some
nice darks in glazes, but thought (hoped) slip might be different...
I just got my first handmade slump molds made last night and I'm anxious to
try them over the weekend, but would love to get a dark, dark shade to
contrast.
(Funny, the very first time I tried Arroyo slip I mixed it with raw sienna
and got an almost black, and have NEVER been able to get anything that dark
since, even using what I thought was the same mix. Go figure...)
I'm getting very very good at producing red-brown, will I, nill I....
Best--
Kate
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