[Woodgears.ca] seems to be a wealth of clever hacks, and this CNC box joint jig is no exception ... One drawback to using a table saw, even with this jig is that some internal parts still ...

That’s changing, though, and [Ben Brandt]’s Internet of Things box joint ... jigs in the modern woodshop, uses wooden gears to advance the carriage and stock across the kerf of a saw blade.

Make a box joint jig from scraps! The full build! Easy build with material you probably have laying around!