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127. What is Cornish Stone in Pottery and What Can You Use Instead?
23 August 2026

127. What is Cornish Stone in Pottery and What Can You Use Instead?

Oxford Clay

About

Join me for this episode of the podcast, where I talk about what Cornish stone is, what Cornish stone is used for in pottery, and some alternatives if you can't find Cornish stone from pottery suppliers near you.

*Always use an FFP3 Face Mask when making Pottery Glazes to protect your lungs from the silica dust in pottery glaze-making materials.

The glaze recipes used in this episode are:

Recipe 1

40 parts - Soda Feldspar

40 parts - Sieved Hardwood Ash

20 parts - Quartz

Recipe 2

40 parts - FFF Feldspar

40 parts - Sieved Hardwood Ash

20 parts - Quartz

Recipe 3 (not good!)

40 parts - Sieved Hardwood Ash

60 parts - Quartz

Watch the video version of this episode on YouTube

✨Support the Podcast

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Resources for Potters:

Pottery Paperback Books available from Amazon

Free Pottery Guides:

🆓 Download the Free How to Make a Pottery Glaze Workbook (suitable for beginners):

🆓 Download the Free How to programme an Electric Kiln for bisque and stoneware glaze firings (includes full kiln firing schedule)