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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.

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All Episodes

41:04

Is that an Oolite?

For Flux Sake ·

2024/09/25

Have you ever heard of an Oolite? Find out more about this rare and interesting glaze precipitate on this week’s episode. The gang also take a trip to materials corner to discuss new potassium feldspars that could replace Custer Feldspar, and answer a question about kiln venting. 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 troubleshooting,

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32:04

The agony and ecstasy of Gillespie Borate

For Flux Sake ·

2024/09/18

Join us as the For Flux Sake gang dive into layering glazes. Have you ever noticed some glazes look better below others, but not on top? Find out why the order you apply them matters and more on this week’s episode. We also have a surprise visit and a great question about Gillespie Borate from their #1 superfan Kookie Kane. 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

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41:15

Fluxed Up with Nick Sevigney

For Flux Sake ·

2024/09/11

Get ready for a wild ride in the studio with ceramic artist Nick Sevigney! In this episode of our new For Flux Sake segment Fluxed Up, we dive into the precarious world of ceramics filled with personal stories, studio mishaps, and the ever-elusive perfect glaze. Join us as Nick shares his journey from porcelain skepticism to newfound appreciation, the impact of the Custer Feldspar shortage, and reveals the trials of handling glaze disasters. Plus, we uncover the joys and frustrations of gallery life

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41:40

Shivering Sucks

For Flux Sake ·

2024/09/04

We're kicking off Season 4 of For Flux Sake with a bang—or should we say a "ping"? Matt, Rose, and Kathy are joined by producer Ben to unveil some exciting surprises awaiting you in the new season. We're firing up a conversation about shivering, crazing, and all the unpredictable quirks that come with ceramics. Why is your glaze flaking off? Could your firing cycle or even hand sanitizer be the culprit? And what’s the deal with delayed crazing? We're here to get to the bottom of your ceramic

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38:11

Can I use paint on my ceramics?

For Flux Sake ·

2024/07/31

In Episode 72, the gang discuss using acrylic paints on pottery. You'll learn when it's safe to use acrylics and find out the effects of firing temperature on your cold-finished pieces. Also we'll get into pyrometric cones yet again and break down the difference between cones and temperature readings. Why are those last crucial 100 degrees Celsius so important? And finally, we're discussing the benefits of bisque-firing underglazes. Discover how this step can help prevent color bleeding and other

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38:51

Cone packs or cone plaques?

For Flux Sake ·

2024/07/17

We start today’s episode learning why self-supporting cones are crucial for accurate firings, as well as everything you need to know about using cone plaques, from proper placement to reusability. We also delve deep into the world of firing temperatures talking about how to achieve vibrant colors at cone 10 while exploring the influence of alkaline earth fluxes on chemistry. Have you been thinking of substituting feldspars in your glazes recently? Make sure to listen and learn about the importance

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34:34

Does your water source affect glazes?

For Flux Sake ·

2024/07/03

Listen in as the gang visit Materials Corner to discuss the latest updates surrounding the loss of Custer. Matt also answers a question from a brewer about the source of water that you use in your glazes. The answer might surprise you! Also, Kathy and Rose share how they've both used CMC in glazes and Matt dives into the science behind it. Today’s episode is brought to you by Cornell Studio Supply. This week’s episode features the following topics: Water, Custer Feldspar, Glaze

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29:47

Can ceramics be safely used for mixing hair dye?

For Flux Sake ·

2024/06/19

Listen to episode 69 where Matt, Rose, and Kathy discuss a listener's question about the use of ceramic bowls in the hair salon. Can ceramic be safely used for mixing hair dye? The team delves into the chemistry to determine if these bowls are a safe choice or a potential disaster. Thinking about going green in the studio? The gang dives into listener concerns about sustainability in a large community ceramics space. Is lowering firing temperatures the answer? What about the materials themselves

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34:10

What’s the deal with Shino glazes?

For Flux Sake ·

2024/06/05

In episode 68, we're getting schooled on Shino glazes! Matt, Rose, and Kathy discuss some of the history, science, and stunning beauty of these unique glazes. The gang also takes a deep dive into the murky waters of water chemistry in glazes. Is it the secret ingredient or a total myth? We'll also debunk some common misconceptions and explain why getting to know your specific gravity and viscosity is the real key to glaze consistency. Can you substitute tin in your glazes? Spoiler alert- it

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38:54

Should I be afraid of manganese?

For Flux Sake ·

2024/05/22

Clay drama got you throwing shade? We've ALL been there! Join the For Flux Sake gang for episode 67 as we commiserate over inconsistent clay bodies and the woes of surprise firing results. We’ll explore the limitations of trying to adjust an existing clay body and glaze to meet your needs and some of the many reasons why commercial clay bodies can vary from batch to batch. Plus, we’ll shed some light on the truth about manganese myths. Learn what is and what is not an actual hazard to your

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01:02:12

Glaze Doctors Live from NCECA!

For Flux Sake ·

2024/05/08

Listen to Kathy, Rose, and Matt take your glaze concerns head-on in this fired-up live recording from the convention this year! The audience delivered rapid fire questions to the gang so get ready for a hodgepodge of hot glaze conundrums. From water content and adjusting a recipe, to cracking the code on crazing crystals and banishing hard pan pandemonium, they tackled every question that came their way, and then some. Do you think anybody was able to stump them? Listen and find out. A special thank

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42:13

Electric Kiln 101 with Freddy Fredrickson pt. 2

For Flux Sake ·

2024/04/24

Listen to the final part of our conversation with the fantastic Freddy Fredrickson, former kiln master at Alfred University and founder of Fredrickson kilns. This episode will have you thinking beyond temperature when trying to get the most out of your kiln during your firings. Is cone 6 truly more energy-efficient than cone 10? Can your thermocouple be the silent hero of your firings? Freddy has answers to all your burning questions (pun intended!) and more! Glaze got you in a daze? Mystery clay

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49:28

Electric Kiln 101 with Freddy Fredrickson pt. 1

For Flux Sake ·

2024/04/10

Join Matt as he dives deep into kilns with Freddy Frederickson, the legendary founder of Fredrickson Kiln Company. For over 30 years, Freddy wasn't just building kilns at The New York State College of Ceramics at Alfred University, he was perfecting the craft as their master kiln builder. In this first episode of our two-part interview, Freddy shares his remarkable journey. From the evolution of electric kiln technology to filling and firing an even kiln, listen in as he answers some of your burning

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33:42

Should I bisque higher than I glaze?

For Flux Sake ·

2024/03/27

Thanks to everyone who came out to our live taping at NCECA. We had a blast and look forward to airing that episode in a few weeks. Today on the show the gang talk about the effect of mold in clay, bisque firing higher than your glaze temperature, and the wild wild west of slip formulas. If you need assistance with a ceramic chemistry problem, send us a voice memo with your question to forfluxsakepodcast@gmail.com. Today’s episode is brought to you by: Bray Poxy archiebrayclay.com This week’s

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35:06

How can I make durable floor tiles?

For Flux Sake ·

2024/03/13

This episode of Flux Sake is a technical delight! Rose and Matt unpack the fascinating world of commercial clay body profiling with Ceramic Material Workshop's ongoing research project. They'll unpack the different tests used and what they reveal about a clay body's performance. Need to know the perfect clay body and glazes for your project? We've got you covered! The gang tackles listener questions on finding durable materials for high-use barware and crafting long-lasting floor tiles. Feeling the

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40:08

Should I be afraid of lead leaching?

For Flux Sake ·

2024/02/28

The For Flux Sake crew is gearing up for NCECA! Tune in to find out their plans and where you can catch them live at the conference. They also dive deep into listener questions, tackling concerns about lead leaching in your kiln from past firings and fish tank safety. Can your ceramic pieces pose a hidden danger for you or your aquatic friends? Learn the facts with us and stay safe! Got a perplexing ceramic problem? Send the crew a voice memo with your question to forfluxsakepodcast@gmail.com and

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37:48

What are those symbols on my glaze label?

For Flux Sake ·

2024/02/14

On today’s episode the gang talk about deciphering the labels on your commercial glazes. They also answer listener questions about standard bisquing temperatures in the U.S., and if there is a toxicity risk when using lead glazed wares from the 19th century. If you need assistance with a ceramic chemistry problem, send us a voice memo with your question to forfluxsakepodcast@gmail.com. Kathy, Matt, and Rose are excited to be participating in this year’s NCECA conference in Richmond, VA. Come on out

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39:07

How often can I recycle my clay?

For Flux Sake ·

2024/01/31

On today’s episode the gang talk about recycling clay, knowing how hot a slip or glaze can be fired, and tips for running a community studio. If you need assistance with a ceramic chemistry problem, send us a voice memo with your question to forfluxsakepodcast@gmail.com. As we head into the new year, we are having a comment drive. This is one of the easiest ways to support this show, and the best part is that it’s totally free. To participate simply leave a review and a rating for the show on your

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41:13

Can a glaze flaw be aesthetically attractive?

For Flux Sake ·

2024/01/17

On today’s episode the gang answer an interesting question about the beauty of glaze flaws, as well as discussing fake reduction glazes using silicon carbide and making pots that are durable enough for restaurants. If you need assistance with a ceramic chemistry problem, send us a voice memo with your question to forfluxsakepodcast@gmail.com. As we head into the new year, we are having a comment drive. This is one of the easiest ways to support this show, and the best part is that it’s totally

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32:07

Can I create atmospheric effects in an electric kiln?

For Flux Sake ·

2024/01/03

Happy New Year from the For the Flux Sake gang! In today’s episode Kathy, Rose, and Matt answer three listener questions about kiln peeps, creating atmospheric effects in an electric kiln, and the best ways to test wild clay. If you need assistance with a ceramic chemistry problem, send us a voice memo with your question to forfluxsakepodcast@gmail.com. As we head into the new year, we are having a comment drive. This is one of the easiest ways to support this show, and the best part is that it’s

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