This is a fun easy project, I made a few of these for a friend of mine who can throw quarters a very long distance. I figured it would be pretty cool if they could stick into something, so took a quarter to my bench grinder. BE CAREFUL this could be dangerous if used by the wrong person.
Step 1: Getting the Coin's Outline
To draw a good throwing star it is a good idea to make a stencil out of paper first. A easy way to transfer the outline of the quarter onto the paper is to place it under the paper, rub you finger in small amount of graphite then rub your finger around the outside of the coin.