You might believe that it's impossible to bend a coin with your own fingers, and you'd be right -- unless you have fingers of steel. With a single magic coin and a marker, you can bend a coin and convince your audience that you do have these superhuman fingers. When performing the trick, remember to involve the audience whenever you can -- you'll leave them speechless and wanting more.
Buy a magic coin from your local trick shop or at an online magic shop such as at Magic Depot, Magic Whiz or Magic Tricks. The coin should look exactly like a normal coin.
Test the coin to ensure it bends as you wish. It should be held together with elastic bands that help it bend in two or three places.
Assemble your audience and give the magic coin to one of the audience members to inspect. Don't tell them the trick that you are going to perform at this point -- this may cause the audience member to try to bend the coin herself.
Take back the coin and write your initials on both sides of it. Show the audience the coin again and tell them that it is a regular coin. Tell them that you are going to use your fingers of steel to bend the coin.
Take the coin in your two hands between your index fingers and thumbs. Make it look like you are struggling to bend the coin. To sell this part of the trick, you might even give up trying to bend it at one point.
Continue trying to bend it and eventually begin to bend it very slowly until you have a noticeable curve. Throw the coin on a table, have the audience inspect the coin and take in the applause.