Sunday, February 28, 2010

test 7


"72" Base with Vanadium
Cone 6 oxidation

Recipe:
Neph Sye 24
Dolomite 11
Gerstly Bor. 12
Whiting 4
Zinc Oxide 2
EPK 7
Flint 40
+
Vanadium 5

Evaluation:
Unsure how to describe this glaze. Visually it looks dry, however the pooling and separation of color is quite glossy. Their is an extreme separation of color in this glaze that is visually conflicting with tactile assumptions. Their is almost an oily separation. In places where an initiation of a drip begins, the best analogy I can come up with is olive oil mixed with butter. The opaque coloring (butterish) almost floats on the clear olive oil gloss. Interesting glaze!

This glaze is one of 18 tests. Students of the fall 2009 semester tested in 100 g. batches, recalculated to assure glaze stability, then further tested 500 g. batches, and finally compiled a list of 18 glazes to go through a uniformed batch test. All batches of this 18 recipe set were mixed through a process of precise measurements, 60 and 80 mesh screening, were dipped on cone 04 bisque for 3 seconds, and were finally fired to a witnessed cone 6 oxidation in an electric kiln. (Firing schedules are to follow shortly).

1 comment:

  1. Did you use vanadium pentoxide, oxide, or mason stain?

    ReplyDelete