Ceramics/underglazes

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Expert: Leisha Hiester - 7/8/2008


Question

Pot
On one of my pots the instructor suggested I use what she called underglaze.  It was a thin substance I painted on greenware that immediately soaked in like a stain and covered the entire pot in a rich deep blue.  It required only one coat.  When bisqued it retained it's beautiful color and remained flat in appearance. I used glossy glaze in some areas of the pot for firing and the combination ended in a very attractive result.  She's no longer around to ask what type of underglaze this is and I cannot identify what it is called so I can order it.  It apparently is not the common type of underglaze, which appears to be mostly for painting decorations on greenware and requires 3 coats.  Can you tell me what this would be and where to buy?  Thanks so much for your help.

Answer
Carole,

You're right, there are a variety of underglazes readily available from commercial suppliers. They're designed for economical coverage of a large area. Sometimes, especially with blue colors, only one coat is necessary.

Have you looked at Duncan brand "cover-coats"? They carry a variety of marine blues that appear similar to this color. It appears very similar to their Danish blue. Their Cover coats can be mixed also to create custom colors. That is one possibility if it is earthenware.

Check out this url;

http://www.duncanceramics.com/ProductColor.aspx?id=8234293c-67dd-494d-98c2-72f11...

Do you know what cone this pot was fired to? IF, the pot was mid-range fired (cone 5-7) or higher (up to cone 10) it could have been a studio glaze.

Was this in a classroom at college? Studio?

Hope this helps. Leisha
    Questioner's Rating
    Rating(1-10)Knowledgeability = 10Clarity of Response = 10Politeness = 10
    CommentThank you so very much. I appreciate your prompt response and the information.


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Leisha Hiester

Expertise

Inquiries about ceramics, pottery, clay and art in general.

Experience

21 years in ceramics and clay, teaching, producing and selling.

Education/Credentials
College, courses, teacher and worked in production studios.

Past/Present Clients
Private collections

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