The Matchbox Penetration

The Effect: Remove from your pocket the heavy matchbox and toothpick. Push the toothpick straight through the center of the box, freely showing it at all times. Not impressed? Remove the toothpick and open the box. What you see is a solid brass block that entirely fills the box! The solid brass block can be examined. No skill required. A self-working miracle you'll be able to perform immediately!