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Artwork for For Flux Sake
Ceramics
Glaze Chemistry
Electric Kilns
Pottery
Clay Recycling
Community Studios
Ceramics Materials Workshop
Cone 6
Thermocouples
Cone 10
Pottery Techniques
Glaze Calculation
Manganese Safety
Clay Education
Shino Glazes
Custer Feldspar
Bray Poxy
Lead Contamination
Feldspar
Lithium

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.

PublishesTwice monthlyEpisodes125Founded5 years ago
Number of ListenersCategories
DesignVisual ArtsArts

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Artwork for For Flux Sake

Latest Episodes

We love questions from our educator friends. Today's episode starts with a question from a high school teacher who wondered what the best materials are for starting a glaze lab. The gang also answer a question about cleaning up clay with soap and tak... more

Have you ever wondered what the firing rates are for the pre-programmed kiln schedules in modern kilns? In today's episode the gang talk about the differences between slow, medium, and fast on Bartlett controllers, and how the rates affect glaze outc... more

Unloading a kiln can be an emotional rollercoaster, especially if it's filled with a new ceramic form that gives you trouble. Today the gang answer a listener question about how to keep plates from cracking, the best temperature for firing terracotta... more

What is carbon coring, and should we care about it? The term is actually a misnomer, with the real culprit being iron, a common ingredient in reduction fired clays. Today the gang talk about the phenomenon along with questions about kiln safety, and ... more

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Recent Guests

Ian Tanner
Owner of Silverton Pottery Company, listener asking about firing fast vs medium
Silverton Pottery Company
Episode: Is it best to use the medium or fast fire setting on my kiln?
Gabriel Kline
Co-author of Amazing Glaze: Food Safe Recipes
Episode: Gabriel Kline and Bill Collins on food safe glazes
Bill Collins
Co-author and PhD Chemistry Professor
Episode: Gabriel Kline and Bill Collins on food safe glazes
Steven Young Lee
Ceramic artist and former director of the Archie Bray Foundation
Brickyard Network
Episode: Fluxed Up with Steven Young Lee
Susan Feagin
Clay manager at the Penland School of Crafts and solo artist
Penland School of Crafts
Episode: Fluxed Up with Susan Feagin
Meredith Host
Ceramic artist specializing in mid-range glazes and functional pieces
Episode: Fluxed Up with Meredith Host
Paul Andrew Wandless
Chicago-based artist, educator, and author
Author of Image Transfer on Clay
Episode: Fluxed Up with Paul Andrew Wandless
Pattie Chalmers
Ceramic artist with a diverse practice
Episode: Fluxed Up with Pattie Chalmers
Osa Atoe
Ceramic artist known for her work with wild clays and innovative glazing techniques
Episode: Fluxed Up with Osa Atoe

Hosts

Kathy King
Host with Harvard affiliation, widely referenced for ceramics program and testing-focused guidance.
Rose Katz
Co-host with deep expertise in ceramic materials and glaze chemistry.

Reviews

4.9 out of 5 stars from 446 ratings
  • The best ceramics podcast

    Great info presented in an entertaining and engaging way. I do have to say that while Kathy and Rose are a delight, I sometimes have to take a break from the podcast because Matt rubs me the wrong way — comes across very arrogant and condescending.

    Apple Podcasts
    5
    Pixar4Prez
    United States21 days ago
  • Worth my time!

    This informative podcast has helped me solve a few problems and it’s just great fun! Kathy’s quick wit provides laugh out loud moments.

    Apple Podcasts
    5
    nick name throwthedice
    United States7 months ago
  • Not to be missed

    I am an avid listener of this podcast. It’s both informative and entertaining.

    If you work in ceramics, and love to talk shop, this is the place for you.

    Each episode deals with issues that have been sent in by listeners.

    If you want to learn more about ceramics, covering a wide variety of topics with an emphasis on problem solving, the science of ceramics and glazes, and educating listeners about the raw materials that we use, you owe it to yourself to listen this podcast.

    A wide variety o... more

    Apple Podcasts
    5
    DonKopy
    United States8 months ago
  • Fun, engaging and educational

    Love this show, I learn something in every episode. As soon as I hear the jingle I feel happy.

    Apple Podcasts
    5
    nitchi0999
    Australia8 months ago
  • A gift of a show

    I love this show, so much that I relisten to episodes and on second listens I feel like I learn even more.

    Kathy is a great host and really creates a welcoming feeling while Rose and Matt bring the science.

    All together is a magic combination that makes me miss new episodes when they’re on “break.”

    Apple Podcasts
    5
    Melodie22
    United States8 months ago

Listeners Say

Key themes from listener reviews, highlighting what works and what could be improved about the show.

Listener feedback highlights the show's ability to explain complex chemistry clearly and entertaining banter between hosts.
Fans praise the practical, test-driven guidance and the approachable style for all levels of potters.
Listeners appreciate the focus on debunking myths and providing reliable, science-based insights into glazes and firing.

Chart Rankings

How this podcast ranks in the Apple Podcasts, Spotify and YouTube charts.

Apple Podcasts
#5
United States/Arts/Visual Arts
Apple Podcasts
#177
United States/Arts
Apple Podcasts
#18
Canada/Arts/Visual Arts
Apple Podcasts
#33
United Kingdom/Arts/Visual Arts
Apple Podcasts
#200
Canada/Arts
Apple Podcasts
#33
Australia/Arts/Visual Arts

Talking Points

Recent interactions between the hosts and their guests.

Is it best to use the medium or fast fire setting on my kiln?
Q: Can Ian compensate for temperature and still do a fast fire, and is customizing the fast firing program possible?
Yes, but you must write a custom firing program with specific heating rates and peak temperature so you reach the desired cone target; the built-in fast firing program is often underpowered and unreliable, so hand-tune the profile.
Why are my plates cracking?
Q: Is there a vegan alternative for shellac when making slip casting molds?
There is debate about vegan alternatives; however, practical guidance centers on using mold-release products like Murphy's Oil Soap as barrier layers, which avoids shellac and can be washed away after use.
What causes carbon coring in clays?
Q: Gloria from Newton asks about kiln safety and whether running a kiln overnight is risky; what precautions are essential?
The hosts stress having a dedicated fire extinguisher rated for electrical fires, ensuring proper installation by a licensed electrician, using appropriate wiring and outlets, keeping combustibles away, and monitoring kilns with web-connected tools if firing overnight; generally, with proper precautions, overnight firing can be safe but requires vigilance.
What causes carbon coring in clays?
Q: Hi, this is Lynx from Seattle. What is the actual problem with carbon coring in wood-fired or reduction firings?
The panel explains that carbon coring is a misinterpretation; the dark interiors seen in some ceramic bodies are primarily due to iron chemistry and reduction dynamics, not carbon residues. In some cases, the dark center can be caused by density or immature clay, but true carbon-related trapping is not the main mechanism in most cases.
Should I make my own clay?
Q: Would it be possible to mix your own clay? Wouldn't that save money?
Yes, it is possible to mix your own clay, but the equipment and effort required can make it impractical for many.

Audience Metrics

Listeners, social reach, demographics and more for this podcast.

Listeners per Episode
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Frequently Asked Questions About For Flux Sake

What is For Flux Sake about and what kind of topics does it cover?

A practical, chemistry-forward show that answers listener questions about clay bodies, glazes, firing, and studio workflow. Episodes mix rigorous material science with real-world studio经验, debunking myths and offering test-based guidance for potters and ceramic professionals. The hosts' banter and accessible explanations make advanced topics approachable, from glaze chemistry and kiln safety to sourcing materials and community studio etiquette, often framed around listener questions and hands-on troubleshooting. A standout is the strong emphasis on testing, safety, and evidence-based approaches, plus a friendly, collaborative vibe that keeps complex topics engaging for a broad range of practitioners.

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How many listeners does For Flux Sake get?

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Which podcasts are similar to For Flux Sake?

These podcasts share a similar audience with For Flux Sake:

1. Tales of a Red Clay Rambler: A pottery and ceramic art podcast
2. The Maker's Playbook
3. The Potters Cast
4. The Mud Peddlers: Ceramic Art Behind the Scenes
5. Wheel Talk

How many episodes of For Flux Sake are there?

For Flux Sake launched 5 years ago and published 125 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

How do I contact For Flux Sake?

Our systems regularly scour the web to find email addresses and social media links for this podcast. We scanned the web and collated all of the contact information that we could find in our podcast database. But in the unlikely event that you can't find what you're looking for, our concierge service lets you request our research team to source better contacts for you.

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What guests have appeared on For Flux Sake?

Recent guests on For Flux Sake include:

1. Ian Tanner
2. Gabriel Kline
3. Bill Collins
4. Steven Young Lee
5. Susan Feagin
6. Meredith Host
7. Paul Andrew Wandless
8. Pattie Chalmers

To view more recent guests and their details, simply upgrade your Rephonic account. You'll also get access to a typical guest profile to help you decide if the show is worth pitching.

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