Linda Arbuckle on mon 21 feb 05
Bruce asked about whether to use powdered or granular rutile, saying
that granular didn't melt, and powdered colored the whole glaze, rather
than giving the gold spots on a white ground of the original glaze. I'd
say it's about using powdered, applying sufficiently thick, and cooling
slower. The crystals from Ti in the rutile need time to form.
John Hesselberth gave a great NCECA presentation on using an electric
kiln well, and put that PowerPoint on his web site. See:
See the 2004 NCECA presentation link. Last section shows glazes that are
cooled at different rates, and give markedly different results.
Linda Arbuckle, Professor
University of Florida
School of Art and Art History
P.O. Box 115801
Gainesville, FL 32611
(352) 392-0201 x 219