Show what appears to be a small wooden chopper. The blade is made of a piece of solid wood with a finger-size hole drilled through it. The blade neatly fits into a small set of stocks, also made of wood and hinged at the bottom. Remove the blade from the stocks and have both parts examined. Next, show how the blade slides up and down in the stocks. Ask a daring spectator to place their finger into the hole in the stocks. Explain that no matter what happens, they are not to remove their finger from the hole. A mighty chop and the blade seemingly penetrates right through their finger. But wait, there's more. Remove the wooden stock, and there is the solid wood blade hanging on their outstretched finger. A miracle. And, all may be handed for immediate examination.