Hi All! Trying to achieve black, near opaque, brush strokes... such as below image.
I’ve been experimenting with iron oxide washes and iron slip on greenware (Phoenix clay), then bisque fired, then cone 10 gas fired w/ clear glaze, but they turn out as washed out brownish, mottled, or rusty metallic. (black underglaze would not work as it needs several coats to be opaque... im looking to leave more energetic brush strokes)
What kind of wash/slip should be used to achieve a darker black? Should it be applied on greenware or bisque? If bisque… under or over glaze?
Working in a community studio so limited to cone 10 gas fire, white or clear glaze, and simple oxide washes and slips. I don't mind buying another product if needed
Thank you!