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No special tools needed—just your fingers and a rubber band! Watch the full tutorial now and start amazing everyone with this fun illusion ... How the First Round Projects After NCAA Tournament ...

Ever noticed that a rubber band gets warmer when it’s stretched ... For more thermodynamic fun, check out [Al Williams] recent article about building a DIY heat pipe.

Sounds like fun! Aside from powering world record attempting radio controlled aircraft, did you know that you can build a rubber band powered refrigerator? It’s true!