For Flux Sake Podcast

CMW’s Matt and Rose Katz join co-host Kathy King to answer your burning questions about clay and glaze in a comical, albeit insightful, way. Check out the latest episodes of For Flux Sake below, or subscribe on your favorite podcast app.

Once you’ve finished listening to all of the For Flux Sake episodes, check out The Brickyard Network’s other great podcasts here!

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Hi there! We’re Matt and Rose. We started this workshop to provide the ceramics community with a solid understanding of their glazes and clay to make your studios the best that they can be! We co-host a podcast on ceramics and glazing! Check out recent episodes below.

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CMW’s Matt and Rose Katz join co-host Kathy King to answer your burning questions about clay and glaze in a comical, albeit insightful, way. Check out the latest episodes of For Flux Sake below, or subscribe on your favorite podcast app.

Once you’ve finished listening to all of the For Flux Sake episodes, check out The Brickyard Network’s other great podcasts here!

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Cristobalite and quartz inversion are the great boogie men of ceramics, often being used as an explanation for 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?
Cristobalite and quartz inversion are the great boogie men of ceramics, often being used as an explanation for 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?

Episode 95 – What should we know about cristobalite and quartz inversion?

Season 4

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.
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Get ready for a wild ride in the studio with ceramic artist Paul Andrew Wandless! 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 Paul shares about making casting slips out of dark clay bodies, as well as how he builds with cast slabs for extra strength and durability. Tune in for a dose of humor, technical tips, and a behind-the-scenes look at the life of a ceramic artist.
Get ready for a wild ride in the studio with ceramic artist Paul Andrew Wandless! 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 Paul shares about making casting slips out of dark clay bodies, as well as how he builds with cast slabs for extra strength and durability. Tune in for a dose of humor, technical tips, and a behind-the-scenes look at the life of a ceramic artist.

Episode 94 – Fluxed Up with Paul Andrew Wandless

Season 4, Fluxed Up

Join us as Paul shares about making casting slips out of dark clay bodies, as well as how he builds with cast slabs for extra strength and durability. Tune in for a dose of humor, technical tips, and a behind-the-scenes look at the life of a ceramic artist.
View Episode
Have you ever tried to create budget-friendly glazes? It can be hard, especially when you want rich purples and blacks. This week the gang talk about ways to save money in your glaze lab, and how tariffs might affect the supply chain. They also start the episode commiserating on how cold it is this time of year in New England, and what to do if your clay freezes.
Have you ever tried to create budget-friendly glazes? It can be hard, especially when you want rich purples and blacks. This week the gang talk about ways to save money in your glaze lab, and how tariffs might affect the supply chain. They also start the episode commiserating on how cold it is this time of year in New England, and what to do if your clay freezes.

Episode 93 – Are there budget-friendly black and purple glazes?

Season 4

Have you ever tried to create budget-friendly glazes? It can be hard, especially when you want rich purples and blacks. This week the gang talk about ways to save money in your glaze lab, and how tariffs might affect the supply chain. They also start the episode commiserating on how cold it is this time of year in New England, and what to do if your clay freezes.
View Episode
Have you noticed thermal expansion measurements on your clay or glaze recipes? If so you might be wondering what those measurements mean, and how you use them to predict glaze fit on a clay body. This week the gang discuss thermal expansion and why those numeric values aren’t always so helpful. They also answer a listener question about glazes with rare earth elements.
Have you noticed thermal expansion measurements on your clay or glaze recipes? If so you might be wondering what those measurements mean, and how you use them to predict glaze fit on a clay body. This week the gang discuss thermal expansion and why those numeric values aren’t always so helpful. They also answer a listener question about glazes with rare earth elements.

Episode 92 – How can I measure thermal expansion?

Season 4

Have you noticed thermal expansion measurements on your clay or glaze recipes? If so you might be wondering what those measurements mean, and how you use them to predict glaze fit on a clay body. This week the gang discuss thermal expansion and why those numeric values aren’t always so helpful. They also answer a listener question about glazes with rare earth elements.
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New kilns bring lots of excitement to the studio, but also a few questions. Should I calibrate my thermocouple? And, Do I need to adjust my firing rate to my new elements? This episode the gang talk about new kilns, ASTM standards for ware, and the difference between K23 and K26 soft bricks. They also start the show discussing testing methods for glaze durability. Do you have questions or need advice on glazes?
New kilns bring lots of excitement to the studio, but also a few questions. Should I calibrate my thermocouple? And, Do I need to adjust my firing rate to my new elements? This episode the gang talk about new kilns, ASTM standards for ware, and the difference between K23 and K26 soft bricks. They also start the show discussing testing methods for glaze durability. Do you have questions or need advice on glazes?

Episode 91 – How can I get the best firing out of my new kiln?

Season 4

New kilns bring lots of excitement to the studio, but also a few questions. Should I calibrate my thermocouple? And, Do I need to adjust my firing rate to my new elements? This episode the gang talk about new kilns, ASTM standards for ware, and the difference between K23 and K26 soft bricks. They also start the show discussing testing methods for glaze durability.
View Episode
Get ready for a wild ride in the studio with ceramic artist Pattie Chalmers! 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 Pattie shares a mishap with clay formulation, as well as how she teaches her students at Southern Illinois University Carbondale to be resourceful in the glaze lab. Tune in for a dose of humor, technical tips, and a behind-the-scenes look at the life of a ceramic artist.
Get ready for a wild ride in the studio with ceramic artist Pattie Chalmers! 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 Pattie shares a mishap with clay formulation, as well as how she teaches her students at Southern Illinois University Carbondale to be resourceful in the glaze lab. Tune in for a dose of humor, technical tips, and a behind-the-scenes look at the life of a ceramic artist.

Episode 90 – Fluxed Up with Pattie Chalmers

Season 4, Fluxed Up

Get ready for a wild ride in the studio with ceramic artist Pattie Chalmers! 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 Pattie shares a mishap with clay formulation, as well as how she teaches her students at Southern Illinois University Carbondale to be resourceful in the glaze lab. Tune in for a dose of humor, technical tips, and a behind-the-scenes look at the life of a ceramic artist.
View Episode
Pin holes are a pesky issue in ceramics, largely because multiple glaze defects are often called pinholes. The gang talk about the myriad issues with pinholes, and if you can fix them on an already fired pot. They also discuss why commercial glazes have wide firing ranges. They start the show laughing and questioning the existence of removable ceramic stickers
Pin holes are a pesky issue in ceramics, largely because multiple glaze defects are often called pinholes. The gang talk about the myriad issues with pinholes, and if you can fix them on an already fired pot. They also discuss why commercial glazes have wide firing ranges. They start the show laughing and questioning the existence of removable ceramic stickers

Episode 89 – What’s up with all those pinholes?

Season 4

Pin holes are a pesky issue in ceramics, largely because multiple glaze defects are often called pinholes. The gang talk about the myriad issues with pinholes, and if you can fix them on an already fired pot. They also discuss why commercial glazes have wide firing ranges.
View Episode
Speckled clay bodies have come roaring back in popularity and in this episode our intrepid clay experts talk about what you can add to your clay body to create this phenomenon. They also talk about plucking and why potassium fluxes are best for clay bodies. To start the show the gang introduce the mysterious case of the A.I. glaze book.
Speckled clay bodies have come roaring back in popularity and in this episode our intrepid clay experts talk about what you can add to your clay body to create this phenomenon. They also talk about plucking and why potassium fluxes are best for clay bodies. To start the show the gang introduce the mysterious case of the A.I. glaze book.

Episode 88 – How do I make a speckled clay body?

Season 4

Speckled clay bodies have come roaring back in popularity and in this episode our intrepid clay experts talk about what you can add to your clay body to create this phenomenon. They also talk about plucking and why potassium fluxes are best for clay bodies. To start the show the gang introduce the mysterious case of the A.I. glaze book.
View Episode
Today’s episode features a simple question. Do I have to glaze my pieces? The FFS gang talk about unglazed surfaces, and also discuss what triggers vitrification during firing. To start the episode, they also gab about Producer Ben’s new book on low fire glazes for potters and sculptors. Do you have questions or need advice on glazes?
Today’s episode features a simple question. Do I have to glaze my pieces? The FFS gang talk about unglazed surfaces, and also discuss what triggers vitrification during firing. To start the episode, they also gab about Producer Ben’s new book on low fire glazes for potters and sculptors. Do you have questions or need advice on glazes?

Episode 87 – Do I Have to Glaze My Pieces?

Season 4

Today’s episode features a simple question. Do I have to glaze my pieces? The FFS gang talk about unglazed surfaces, and also discuss what triggers vitrification during firing. To start the episode, they also gab about Producer Ben’s new book on low fire glazes for potters and sculptors.
View Episode
Have you ever wanted to bake bread in one of your pots? Today the gang answer a listener's question about the best way to make ceramic bakeware. They also discuss a new trend in environmental design and why using sodium fluxes in clay bodies can cause trouble when reclaiming clay.
Have you ever wanted to bake bread in one of your pots? Today the gang answer a listener's question about the best way to make ceramic bakeware. They also discuss a new trend in environmental design and why using sodium fluxes in clay bodies can cause trouble when reclaiming clay.

Episode 86 – How Do You Make Ceramic Bakeware?

Season 4

Have you ever wanted to bake bread in one of your pots? Today the gang answer a listener's question about the best way to make ceramic bakeware. They also discuss a new trend in environmental design and why using sodium fluxes in clay bodies can cause trouble when reclaiming clay.
View Episode
Get ready for a wild ride in the studio with ceramic artist Osa Atoe! 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 Osa shares her experience with letting go of a favorite glaze combo, and how this encouraged her to explore wild clay terra sigs. Tune in for a dose of humor, technical tips, and a behind-the-scenes look at the life of a ceramic artist
Get ready for a wild ride in the studio with ceramic artist Osa Atoe! 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 Osa shares her experience with letting go of a favorite glaze combo, and how this encouraged her to explore wild clay terra sigs. Tune in for a dose of humor, technical tips, and a behind-the-scenes look at the life of a ceramic artist

Episode 85 – Fluxed Up with Osa Atoe

Season 4, Fluxed Up

Get ready for a wild ride in the studio with ceramic artist Osa Atoe! 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 Osa shares her experience with letting go of a favorite glaze combo, and how this encouraged her to explore wild clay terra sigs.
View Episode
Do you have the hard pan blues when your glazes settle like a rock to the bottom of the bucket? The gang talk about how bentonite and Epsom Salts might solve hard panning, as well as when and how much you should use. They also talk about how to calcine a substance, and why you shouldn’t calcine egg shells as a calcium source.
Do you have the hard pan blues when your glazes settle like a rock to the bottom of the bucket? The gang talk about how bentonite and Epsom Salts might solve hard panning, as well as when and how much you should use. They also talk about how to calcine a substance, and why you shouldn’t calcine egg shells as a calcium source.

Episode 84 – Bentonite versus Epsom Salts?

Season 4

Do you have the hard pan blues when your glazes settle like a rock to the bottom of the bucket? The gang talk about how bentonite and Epsom Salts might solve hard panning, as well as when and how much you should use. They also talk about how to calcine a substance, and why you shouldn’t calcine egg shells as a calcium source.
View Episode
Have you ever mixed a glaze with the correct amount of water, but it still seems gloopy and thick? If you have then you might need to add a dispersant to help solve this issue. The gang talk about using dispersants, and they answer a listener's question about the robustness of cone six versus cone ten. They also return to Materials Corner to talk about the discontinuation of a popular luster brand.
Have you ever mixed a glaze with the correct amount of water, but it still seems gloopy and thick? If you have then you might need to add a dispersant to help solve this issue. The gang talk about using dispersants, and they answer a listener's question about the robustness of cone six versus cone ten. They also return to Materials Corner to talk about the discontinuation of a popular luster brand.

Episode 83 – Why is this glaze so gloopy?

Season 4

Have you ever mixed a glaze with the correct amount of water, but it still seems gloopy and thick? If you have then you might need to add a dispersant to help solve this issue. The gang talk about using dispersants, and they answer a listener's question about the robustness of cone six versus cone ten. They also return to Materials Corner to talk about the discontinuation of a popular luster brand.
View Episode
Have you ever noticed how some pots get really hot in the microwave? The gang talk about why this happens, and answer a listener question about coloring reclaimed slop glaze. They also talk about glow in the dark glazes and Rose’s recent video about them on the CMW YouTube channel.
Have you ever noticed how some pots get really hot in the microwave? The gang talk about why this happens, and answer a listener question about coloring reclaimed slop glaze. They also talk about glow in the dark glazes and Rose’s recent video about them on the CMW YouTube channel.

Episode 82 – Why do pots get hot in the microwave?

Season 4

Have you ever noticed how some pots get really hot in the microwave? The gang talk about why this happens, and answer a listener question about coloring reclaimed slop glaze. They also talk about glow in the dark glazes and Rose’s recent video - Glow Up - about them on the CMW YouTube channel.
View Episode
Welcome to a very spooky edition of Fluxed Up with Brett Kern. Today we dive into the precarious world of ceramics filled with funny stories, studio mishaps, and the quest for the ever-elusive perfect glaze. Join us as Brett shares his journey with slip casting inflatable dinosaurs, using commercial glazes, and dealing with dunting after material changes. Tune in for a dose of humor, technical tips, and a behind-the-scenes look at the life of a ceramic artist.
Welcome to a very spooky edition of Fluxed Up with Brett Kern. Today we dive into the precarious world of ceramics filled with funny stories, studio mishaps, and the quest for the ever-elusive perfect glaze. Join us as Brett shares his journey with slip casting inflatable dinosaurs, using commercial glazes, and dealing with dunting after material changes. Tune in for a dose of humor, technical tips, and a behind-the-scenes look at the life of a ceramic artist.

Episode 81 – Fluxed Up with Brett Kern – Happy Halloween!

Season 4, Fluxed Up

Welcome to a very spooky edition of Fluxed Up with Brett Kern. Today we dive into the precarious world of ceramics filled with funny stories, studio mishaps, and the quest for the ever-elusive perfect glaze. Join us as Brett shares his journey with slip casting inflatable dinosaurs, using commercial glazes, and dealing with dunting after material changes.
View Episode
Have you wondered how you can help support artists affected by Hurricane Helene? This week’s show is dedicated to sharing information and resources to assist the North Carolina clay community in rebuilding. The gang talks about assessing damage after a natural disaster, what supply chain issues we expect, and organizations needing support. If you’d like to contribute to disaster relief, please donate to the Craft Emergency Relief Fund at www.cerfplus.org.
Have you wondered how you can help support artists affected by Hurricane Helene? This week’s show is dedicated to sharing information and resources to assist the North Carolina clay community in rebuilding. The gang talks about assessing damage after a natural disaster, what supply chain issues we expect, and organizations needing support. If you’d like to contribute to disaster relief, please donate to the Craft Emergency Relief Fund at www.cerfplus.org.

Episode 80 – How can we help North Carolina?

Season 4

Have you wondered how you can help support artists affected by Hurricane Helene? This week’s show is dedicated to sharing information and resources to assist the North Carolina clay community in rebuilding. The gang talks about assessing damage after a natural disaster, what supply chain issues we expect, and organizations needing support. If you’d like to contribute to disaster relief, please donate to the Craft Emergency Relief Fund at www.cerfplus.org.
View Episode
Atmospheric firing is so much fun! What’s not to like about a process where you get to spray soda into a flaming hot kiln. This week the gang talk about the durability of cone 6 soda fired pots, and the process for identifying mystery materials. They also take us behind the scenes to talk about what goes into making videos for the CMW Youtube channel.
Atmospheric firing is so much fun! What’s not to like about a process where you get to spray soda into a flaming hot kiln. This week the gang talk about the durability of cone 6 soda fired pots, and the process for identifying mystery materials. They also take us behind the scenes to talk about what goes into making videos for the CMW Youtube channel.

Episode 79 – Are cone 6 soda fired pots durable?

Season 4

Atmospheric firing is so much fun! What’s not to like about a process where you get to spray soda into a flaming hot kiln. This week the gang talk about the durability of cone 6 soda fired pots, and the process for identifying mystery materials. They also take us behind the scenes to talk about what goes into making videos for the CMW YouTube channel.
View Episode
Have you heard of a Bristol glaze? and what makes this glaze special? The gang tackle that question and more on this week’s episode of For Flux Sake. They also discuss the crackle vs. crazing nomenclature, as well as the definition of porcelain.
Have you heard of a Bristol glaze? and what makes this glaze special? The gang tackle that question and more on this week’s episode of For Flux Sake. They also discuss the crackle vs. crazing nomenclature, as well as the definition of porcelain.

Episode 78 – What’s so special about a Bristol Glaze?

Season 4

Have you heard of a Bristol glaze? This week on For Flux Sake the gang talk about the chemistry that makes these glazes work. They also discuss the crackle vs. crazing nomenclature, as well as the definition of porcelain.
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