For Flux Sake cover art

For Flux Sake

For Flux Sake

By: Kathy King Rose Katz Matt Katz
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Matt and Rose Katz of the Ceramics Materials Workshop and Kathy King of the Ceramics Program at Harvard University discuss listener questions about clay and glaze. This show will have you laughing and learning about the chemistry behind ceramics in no time.Ceramic Materials Workshop Art
Episodes
  • Can I add something to a commercial glaze to change its temperature?
    Jun 3 2026

    To start today's episode the gang talk about their upcoming live show in Boston. We hope you will join us June 5th at the Harvard Ed Portal, where Kathy, Matt, Rose, and Producer Ben will be ready to answer your burning questions about clay and glaze. They also answer listener questions about what to do when all your glazes mature at a different temperature, and how to identify a mystery white spot in the surface of your fired glaze.

    Have you checked out the new For Flux Sake Patreon? This is a great way to show your support and have access to discounted merch, live hangouts, and extra episodes. Head over to Patreon and sign up today.

    Today's episode is brought to you by Rhode Kilns, Monkey Stuff, The Rosenfield Collection, Cornell Studio Supply, and Ceramic Materials Workshop's Making Glaze Make Sense.

    This week's episode features the following topics:

    Live show, glaze temperature, Cone 5, Cone 5 ½, Cone 6, crystal formation

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    37 mins
  • Why do layered glazes look different every time?
    May 13 2026

    Today we have a special Flux U episode where the gang dive deep into glaze application to answer a listener's question about the chemical and physical limitations of glaze layering. What seems like a simple topic turns out to be quite complex. They also talk about helpful tips for buying and installing your first home kiln.

    Have you ever wanted to be on a For Flux Sake episode? Join the gang in person for a live taping June 5th at the Harvard Ed Portal! Kathy, Matt, Rose, and Producer Ben will be in Boston to answer your burning questions about clay and glaze. Do you secretly need even more live shows? June 6th you can join a special Flux U taping at Harvard Ceramics. It's going to be a whole wonderful weekend of clay and glaze mania.

    Flux U, is an exclusive perk for Patreon members. If you'd like to have access to additional episodes like this one and special merch head on over to Patreon and join the For Flux Sake community.

    Today's episode is brought to you by Monkey Stuff, The Rosenfield Collection, Cornell Studio Supply, and Ceramic Materials Workshop's Making Glaze Make Sense.

    This week's episode features the following topics:

    Glaze application, kiln, electrician, particle packing, layering

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    39 mins
  • Can I use ash from a volcano in my glaze?
    May 6 2026

    To start today's explosive episode a listener writes in wondering about using ash from Mt. St. Helens in a glaze. The gang also talk about best cleaning practices for keeping pets and children safe in a home studio, and methods for reducing pinholing.

    Would you like to ask your burning questions about clay and glaze to Kathy, Matt, and Rose in person? June 5th the whole gang heads to Boston for a live show. It's going to be a blast! Tickets are available now through the Harvard Ed Portal.

    Have you checked out the new For Flux Sake Patreon? This is a great way to show your support and have access to discounted merch, live hangouts, and extra episodes. Head over to Patreon and sign up today.

    Today's episode is brought to you by Monkey Stuff, The Rosenfield Collection, Cornell Studio Supply, and Ceramic Materials Workshop's Making Glaze Make Sense.

    This week's episode features the following topics:

    Ash Glaze, home studio, silica, silicosis, pinholing

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    29 mins
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