How do clay teapots/plates and clay pans work, how does the the tea/liquid not soften it up or make it all clumpy? And how does the heat not make it burn or catch fire?
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So a few things, when making pottery it is coated before put into the kiln(pretty much an oven) ensuring all and any open pores are sealed. Also even before the coating, it’s all about the quality of the clay and dedication that went into it and making it near perfect.
The heat expands and solidifies both the clay and the coating making it so that nothing seeps through. So now you have a substance that is pretty much solid all the way around.
Heat does affect it, however to actually get it to the point of melting or whatever is beyond the normal temperatures that it’s being subjected to. Obviously if you’re rapidly heating it up and cooling the pot or cup of anything really, it will break. However that’s with anything, especially glass, some take more heat and more times for this to happen.
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