Are ceramic sealers safe to use on functional ceramics? | For Flux Sake Episode 101 @ceramicmaterialsworkshop
Are ceramic sealers safe to use on functional ceramics? | For Flux Sake Episode 101  @ceramicmaterialsworkshop
Uploaded May 2025 | Updated September 2026, 2 weeks ago
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.

🎙️Today's episode is brought to you by Cornell Studio Supply (cornellstudiosupply.com/) and the newly translated Spanish version of Ceramic Materials Workshop The Middle Glazes. (ceramicmaterialsworkshop.thinkific.com/collections/4b0dfe)

For Flux Sake is hosted by Matt and Rose Katz of the Ceramics Materials Workshop along with Kathy King of the Harvard Ceramics Program. Together they answer your burning questions about clay and glaze. In each episode they answer listener submitted questions in a comical, but also insightful way. This show will have you laughing and learning about glaze chemistry the chemistry behind ceramics in no time. New episodes typically drop every 2 weeks.

#Glazedurability #Bristolglaze #ceramicsealer #tilesealer #GerstleyBorate #GillespieBorate #glaze #podcast #ceramicpodcast
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Are ceramic sealers safe to use on functional ceramics? | For Flux Sake Episode 101

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