Rock-biter is a high lime glaze that Doug Johnson developed over the last 35 years.

Lime in large enough quantities will make oxides run. Rock-biter is a difficult glaze to control.

Rock-biter glaze is actually 3 glazes and two slips that create all the colors.

Green-Brown is a very simple base glaze with two different colors added.

The colors overlap as each side is dipped into different glazes.