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Pottery/Strength of Ferric Chloride in Foil Sagger Firing


hi phillip wanted to know the strength of ferric chloride use for foil saggar firing thnks

Dear Sultana,

    Thank you for your recent question. The strength of ferric chloride in foil sagger firing can be from 50% to 100%, depending on the coloring you desire. Peach and tannish colors are prevailant in mixture of 50:50. Increasing the amount of ferric chloride up to 100:0 will result in oranges, browns and brick reds.

    Remember that ferric chloride is a very strong copper etching chemical and is highly toxic. You must wear appropriate breathing protection during all stages of use. This includes application, firing and cleaning of the kiln.

    I hope this answers your question. If you have further questions, please feel free to contact me at any time. Always at your service.

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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