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Scientific Tuesdays – Removing dents with a hair dryer?

Get the shirts: Facebook: Today I will attempt to remove dents from metal using a hair dryer and some canned air. The theory is that if you heat up the dent long enough, that the molecules inside will expand fair enough away from each other to make the metal more pliable. The next step is to QUICKLY freeze the metal with canned air. If you flip canned air upside down, a freezing liquid comes out. Let’s try this experiment together.