Is it best to use the medium or fast fire setting on my kiln?

Is it best to use the medium or fast fire setting on my kiln?

From For Flux Sake by Kathy King, Rose Katz, Matt Katz

April 1, 2026 · 35 min · Season 5 · Episode 126

About this episode

The episode discusses firing rates in kilns and their effects on glaze outcomes, along with a listener question about Boron sources.

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 outcomes. They also answer a listener question from Sweden about Boron sources and why some of them were recently banned. To start the episode Rose and Matt also announce their exciting new adventure into the world of commercial glaze - Ware 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 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: Firing speed, Bartlett controller, borax, boron, Sweden

People in this episode

Hosts: Kathy King, Rose Katz, Matt Katz

Topics covered

  • firing speed
  • Bartlett controller
  • glaze outcomes
  • Boron sources
  • commercial glaze

Keywords

  • kiln
  • firing rates
  • glaze
  • Bartlett controllers
  • Boron
  • Sweden
  • commercial glaze

Sponsors

Monkey Stuff, The Rosenfield Collection, Cornell Studio Supply, Ceramic Materials Workshop

Mentioned in this episode

Organizations: Bartlett

Products: Ware Glaze

Books & works: Making Glaze Make Sense

Places: Sweden

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