It sounds like a challenge from a [Martin Gardner] math puzzle ... with wood a reality. [Martin]’s design leverages the slot and tab connection we’re used to seeing in laser-cut boxes, but ...

his GlowForge laser cutter allows him to select by color, so [Eric] can easily tell the machine to cut out anything that’s red. As for the size, he did a test run on a scrap of wood and found ...

Even though the wooden book only has five pages, you’ll need to solve a complex mechanical puzzle on each one before you can turn to the next. Made entirely of laser-cut wood, the Codex Silenda ...