A large Scimitar, which you show clearly on both sides. Run it along your bare arm, then with a twist, slice it right into your arm. It goes through right to the bone. Let the audience see this from all sides. It really goes half way through the arm. Then pull it out, and there is just a large red welt where it sliced through your hand. No blood, no gore. Wait a few seconds, then wipe away the welt, and there?s no trace of the cut. The effect is done with the single Scimitar, which the audience can clearly see at all times. No covers, no handkerchiefs, no exchanges.
Easy to do, impressive to watch, and a solid metal prop that you will love to show off with, even if this is not exactly your type of magic. A collector quality prop. It is a very sharp investment.