THE EFFECT: The magician shows an empty can of soda and borrows a coin. The can is shown to be open at the top but the bottom is sealed. The magician then slams the coin into the bottom of the can and the coin penetrates right through!
THE SECRET: Watch the performance and tutorial below...
TIP: An alternative method is to have the type of coin you are going to ask for stuck to the top inside the can with putty. When hit with the other coin and your hand it will fall into the can.