Pottery/Iron Oxide


I recently put two coats of iron oxide and a thick coat of yellow ocher on my piece of ceramic bisque ware and fired it in a gas kiln to cone 10. When the piece came out, it was pewter in color, but I wanted it to look more like wood. Is there a chemical I could soak the piece in to remove some of the oxide?

Dear Debra,

    Thank you for your recent question. There isn't any chemical that I know of that will remove the oxide that has been fused into the glaze on your pottery ware. You may however, try re-glazing the pot with additional yellow ocher to attempt to soften the oxide. Unfortunately, there is no guarantee as to what would happen when you apply the yellow ocher and because the iron oxide was added as a brush on glaze instead of adding it to the glaze in percentage proportions.

    I do wish I could help you further, but glazing is a chemical science and once fired, it is pretty much permanent. Do try my suggestion as this may give you better results.

    If you have further questions, please feel free to contact me again any time. I wish you luck.

Ms. Ti Phillips
Earth Stoke 'N Fire Pottery Studio and Artist Retreat


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Ti Phillips


Will answer any questions on hand building, wheel, glaze, firing. Speciality questions to include those in glaze calculation and development, firing techniques. Please do not send questions on identifying pottery. Although I would love to add this to my question topics, I have a retreat to run as well as the studio and volunteering on AllExperts, and therefore do not have the available time to research indentification and marks. Thank you for understanding.


Experience includes 30 years in pottery design and education. Have taught online and studio classes worldwide for the last 20 years. Own a pottery retreat specializing in firing techniques. Have 12 years solid experience in glaze calculation and formulation as well as problem solving in glaze chemistry. I am the first potter in the United States to have developed a complete package of pottery equipment blueprints for a studio. The blueprints include wheels, kilns, studio furniture, wedgeboards, raku kilns, slab rollers, ball mills and studio tools.

Alliance of Pottery Artists Worldwide Association

Ceramic Industry - PPP Wyndstryder Press - Pottery Journal

University of Sciences and Art's of Oklahoma, studied under Professor Jaymes Dudding.

Awards and Honors
Potter of the year with APAWA, various awards for showmanship and design.

Past/Present Clients
Available upon request.

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