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PODCAST

For Flux Sake

Kathy King, Rose Katz, Matt Katz

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.

arts visual arts

All Episodes

33:36

What are the do’s and dont’s of working in a...

For Flux Sake ·

2025/10/15

Joining a new community studio can be exciting, but also a little scary. Today the gang talk about how to be a good community member. They also answer listener questions about clay color changes, using tar paper in the studio, and where to start when you get your first potter’s wheel. Do you have questions or need advice on glazes? Drop us a line at ForFluxSakePodcast@gmail.com and you could be featured on an upcoming show. Have you checked out the new For Flux Sake Patreon? This is a great way to

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39:47

How do you convert glazes to European materials?

For Flux Sake ·

2025/10/08

Have you ever moved and had to convert your glazes to materials from a different continent? Today the gang talk about how you might do that along with why ‘S’ type thermocouples are the best for accurate firings. They also answer listener questions about upcycling large amounts of casting slip and solutions for handles that keep popping off. Do you have questions or need advice on glazes? Drop us a line at ForFluxSakePodcast@gmail.com and you could be featured on an upcoming show. Have you checked

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33:43

What’s the history behind Orton cones' unusual...

For Flux Sake ·

2025/10/01

Today’s episode starts with a trip to Materials Corner where the gang talk about the likely end of a favorite Kaolin for soda firing. They also answer listener questions about the logic behind Orton cone’s numbering system, the cause of scumming in clay, and the lowest temperature that it's ok to store clay. Do you have questions or need advice on glazes? Drop us a line at ForFluxSakePodcast@gmail.com and you could be featured on an upcoming show. Have you checked out the new For Flux Sake

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35:32

Is the bacteria in reclaimed clay a problem?

For Flux Sake ·

2025/09/18

To start the show Kathy shares about the research being conducted into vanishing historic lusters at the Harvard Art Museum. The gang also answer listener questions about material supply chains, the cleanliness of reclaimed clay, and why Matt and Rose went solar. Do you have questions or need advice on glazes? Drop us a line at ForFluxSakePodcast@gmail.com and you could be featured on an upcoming show. Have you checked out the new For Flux Sake Patreon? This is a great way to show your support

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36:40

What makes a glaze have a wide firing range?

For Flux Sake ·

2025/09/10

Have you ever wondered why some glazes have a wide firing range? Today the gang talk about this phenomenon, answer listener questions about adding stains to clay bodies, and discuss underglaze application. This episode also starts with a trip to Materials Corner along with a check in from a listener about the porosity of flower pots. Do you have questions or need advice on glazes? Drop us a line at ForFluxSakePodcast@gmail.com and you could be featured on an upcoming show. Have you checked out the

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40:30

What defines low-fire ceramics?

For Flux Sake ·

2025/09/03

We are back for season 5 of the show with a low-fire themed episode. Today the gang talk about a few parameters that define low-fire ceramics, as well as how de-airing pug mills work. They also start the show talking about the brand 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. Do you have questions or need advice on glazes? Drop us a line at

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39:04

How does a kiln sitter work?

For Flux Sake ·

2025/07/16

Do you remember the joys of using a kiln sitter? Those mini cones were so cute until you dropped one in the bottom of a fully loaded kiln. Even though manufacturers have shifted to computer controlled models, sitters were a key part of electric kilns for decades. Today on the show the gang answer listener questions about firing a kiln with a kiln sitter and making your own decals. Rose also reads a hilarious story about a clay plasticity experiment gone wrong. Do you have questions or need advice on

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35:42

How can you tell if a glaze is fully melted?

For Flux Sake ·

2025/07/09

Today your favorite glaze experts answer a listener's question about judging the melt of an ash glaze, methods for wet mixing bentonite, and whether or not it's safe to use industrial dinnerware made before lead was regulated. They also open the show talking about why you should never crush encapsulated stains. Do you have questions or need advice on glazes? Drop us a line at ForFluxSakePodcast@gmail.com and you could be featured on an upcoming show. Today's episode is brought to you by Monkey

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37:20

Are metallic glazes similar to melted metal?

For Flux Sake ·

2025/07/02

Have you ever wondered what makes a bronze glaze work? This week on the show the gang answer a listener's question about metallic oxides in glazes, and discuss the finer points of what makes a pinhole a pinhole. Do you have questions or need advice on glazes? Drop us a line at ForFluxSakePodcast@gmail.com and you could be featured on an upcoming show. Today's episode is brought to you by Cornell Studio Supply and Ceramic Materials Workshop Consulting. This week’s episode features the following

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32:23

Can you adjust a cone 6 glaze up to cone 10?

For Flux Sake ·

2025/06/20

Have you ever found the perfect glaze, but it is formulated for a different temperature? Today the gang talk about adjusting glazes from cone 6 up to cone 10, and how you might tell if your kiln can handle going to cone 10. They also start the episode checking in about their summer plans. Do you have questions or need advice on glazes? Drop us a line at ForFluxSakePodcast@gmail.com and you could be featured on an upcoming show. Today's episode is brought to you by Cornell Studio Supply and Ceramic

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25:12

Does how tight a kiln is packed affect its final...

For Flux Sake ·

2025/06/11

Have you noticed how a tight kiln pack can slightly change your cones? In this week’s episode the gang talk about why this happens, as well as answer a listener’s question about firing a balloon inside of a ceramic sculpture. Do you have questions or need advice on glazes? Drop us a line at ForFluxSakePodcast@gmail.com and you could be featured on an upcoming show. This episode is made in memory of Megan Whetstine, a beloved member of the For Flux Sake and Ceramic Materials Workshop family. Her

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33:43

What does vinegar do to clay?

For Flux Sake ·

2025/06/05

Have you ever wondered why vinegar is added to joining slip? This week on the show the gang talk about the use of vinegar in the studio and the absorption rates of blending reclaimed clays. They also answer a listener's question about glazing terracotta flower pots. Do you have questions or need advice on glazes? Drop us a line at ForFluxSakePodcast@gmail.com and you could be featured on an upcoming show. This week’s episode features the following topics: Vinegar, Vitrification, reclaim,

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51:42

Fluxed Up with Steve Lee

For Flux Sake ·

2025/05/21

Get ready for a wild ride in the studio with ceramic artist Steve Lee! In this episode of our Fluxed Up series, we dive into the precarious world of ceramics filled with personal stories, studio mishaps, and the ever-elusive perfect glaze. Join us as Steve shares about his path to harnessing failure to create his beautiful porcelain forms, as well as his time as director of the Archie Bray Foundation and his role in starting the Brickyard Network. Tune in for a dose of humor, technical tips, and a

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29:54

Are ceramic sealers safe to use on functional ceramics?

For Flux Sake ·

2025/05/14

Today we return to the much loved topic of glaze durability on For Flux Sake. Kathy, Matt, and Rose start by talking about the long term durability of Bristol glazes. Then they delve into listener questions about ceramic sealers and substituting for Gerstley Borate in Raku glazes. Do you have questions or need advice on glazes? Drop us a line at ForFluxSakePodcast@gmail.com and you could be featured on an upcoming show. This week’s episode features the following topics: Glaze durability, Bristol

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28:03

Episode 100!

For Flux Sake ·

2025/05/07

Today we are celebrating the 100th episode of For Flux Sake! We’d like to thank the listeners for their excellent questions and for following along as the show has evolved over the last four years. To start this episode Kathy, Matt, and Rose share a few things they have learned making the show. They also answer listener questions about aging your glazes and single firing. Do you have questions or need advice on glazes? Drop us a line at ForFluxSakePodcast@gmail.com and you could be featured on an

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41:25

Fluxed Up with Susan Feagin

For Flux Sake ·

2025/04/23

Get ready for a wild ride in the studio with ceramic artist Susan Feagin! In this episode of our Fluxed Up series, we dive into the precarious world of ceramics filled with personal stories, studio mishaps, and the ever-elusive perfect glaze. Join us as Susan shares funny stories about working at the Penland School of Craft, as well as how she creates brightly colored slips for soda firing. Tune in for a dose of humor, technical tips, and a behind-the-scenes look at the life of a ceramic artist. Got

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31:58

When do glazes actually melt during the firing?

For Flux Sake ·

2025/04/17

Have you ever wondered when the magic happens during the firing? This week on the show the gang talk about the last 100 degrees C of the firing when glazes generally do their melting. They also answer a listener's question about thermocouples placement, and take a trip to Materials Corner to talk about Frit 3110. Do you have questions or need advice on glazes? Drop us a line at ForFluxSakePodcast@gmail.com and you could be featured on an upcoming show. This week’s episode features the following

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35:58

Who are we?

For Flux Sake ·

2025/04/09

This show has been going on for so long that the gang thought they should reintroduce themselves. Kathy, Matt, and Rose start the show talking about the experiences that lead them into a life of clay. They also answer a listener's question about calcining clay. Do you have questions or need advice on glazes? Drop us a line at ForFluxSakePodcast@gmail.com and you could be featured on an upcoming show. This week’s episode features the following topics: Kaolin, calcining, Alfred, Connecticut College

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37:47

Fluxed Up with Meredith Host

For Flux Sake ·

2025/03/25

Get ready for a wild ride in the studio with ceramic artist Meredith Host! In this episode of our Fluxed Up series, we dive into the precarious world of ceramics filled with personal stories, studio mishaps, and the ever-elusive perfect glaze. Join us as Meredith shares about working with decals and layered underglaze, as well as how she had to pivot away from her favorite glaze in the middle of a major commission. Tune in for a dose of humor, technical tips, and a behind-the-scenes look at the life

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31:46

What should we know about cristobalite and quartz...

For Flux Sake ·

2025/03/06

Cristobalite and quartz inversion are the great boogie men of ceramics, often being used to explain cracking clay, glaze fit issues, and general ceramic mayhem. In this episode the gang sort fact from fiction and explain the changes that silica goes through during firing. They also start the episode talking about Matt’s amazing new computer keyboard, which has beautiful celadon-glazed porcelain keys. Do you have questions or need advice on glazes? Drop us a line at ForFluxSakePodcast@gmail.com and

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117 results

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