The answer to this question is not a simple yes or no. Microwaving clay can indeed harden it, but the amount of time required for this to happen will vary depending on the type of clay being microwaved.
Some clays will become hard enough to be used as a pottery material after just a few minutes in the microwave, while others may require up to 10 minutes or more.
Always be sure to test a small amount of clay first to see how long it takes to harden in the microwave before microwaving any larger quantities.
What Happens When You Microwave Polymer Clay?
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