When you build a box, you must make perfect 90-degree corners, and a tape measure is the best tool to use. The trick to knowing you have it right has to do with geometry.

Building your own home decor can be surprisingly easy, especially if you have the right tools. With this quick trick, you can make the process even simpler.

This is a puzzle box. How would you solve it? Let me show you. [dynamic music] [box clicking] [Narrator] Meet Kagen Sound, a multi-award winning woodworker and artist ...