The Modular Crosscut Sled:
A Simple Box Joint Jig
Aside from a dovetail joint, the box, or finger joint is one of the strongest joints to reinforce a corner. Before the era of corrugated cardboard containers, air filled packaging, and overnight shipping, wooden boxes and shredded wood were used to package fragile goods (think leg lamp in A Christmas Story). An inexpensive way to strengthen smaller boxes so they would survive the trip intact was adding finger joints to the vertical corners.
In this post, I’ll show you how to make a simple box joint jig for the modular crosscut sled.