Oil Spot #2 over #1, G.B. ^6

Oil Spot 2 Cover Glaze for OS Combo.

33.3 Custer Felspar (used Forshammer)

27.8 Silica

5.6 Kaolin

33.3 Gerstley Borate

ADD

11.1 Zircopax

 

Oil Spot 1 (first glaze under Cover Glaze)

47.8 G-200 Feldspar (used Forshammer)

23.9 Silica

17.4 Whiting

10.9 Kaolin

ADD

9.8 RIO

 

Comments: for colors of this glaze, add

Cu. Carb. 4% light green tint to cover glaze

Co. Carb. 4 % strong blue color to cover glaze

RIO (5-12%) 10% added brown to cover glaze

Still could see Rust brown #1 glaze under cover glazes. All have a good contrast between both glazes.

 

Mixed cover glaze by subbing G. B. with

Frit 3134 and again with local Boran Frit 169.

No visible difference in glazes. Frit 3134 revealed a stronger blue in the cover glaze #2 with Co. Carb.

 

 

Done