Has anyone got some tips for measuring coefficient of thermal expansion?

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:snoo_shrug: Question! :snoo_shrug:

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I've been working with a fairly strange blend of clay of my own making and I'm having a heck of a time getting commercial glaze to not craze on it. I think my clay body has a fairly low CTE.

Has anyone tried direct measurement of CTE? I'm thinking of heating up a test piece to around 400C to see if I could directly measure CTE (quickly!) so I could have some starting point to start figuring out my own glaze formulations to fit.

Is the usual approach to do a bunch of test tiles of varying glaze compositions to see where crazing begins then towards shivering?

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RebelWithoutAClue

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Posted: 3 years ago
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