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 who's mastered the craft of ...

Lisa von Hasseln has cut wooden puzzles for Elms since 1995. “I love to do crafts, and I think that helps with cutting to see how something starts and ends,” she said.

Take the Marble Run Chain Hoist, for example. One of Ugears’ newer puzzles, it has about 400 individual wooden parts and takes something like 4-8 hours to assemble.

At age 4, Mr. Stokes said, he was putting together 500-piece puzzles. He turned professional about 10 years ago, spending long days guiding pieces of wood into the stationary blade of a scroll saw.

BOULDER, Colo. — Walking into the factory of Liberty Puzzles in Boulder is like a buffet for the senses. Smells of freshly cut wood waft among the dozens of people operating machines, cleaning ...