The key to tight-fitting box joints is an accurate setup. The width of the key, distance between the key and saw blade (or router bit), and the width of the saw blade (or bit) must all be identical. Our new box joint jig setup gauges make this an easy task. The HDPE (high-density polyethylene) gauges won't harm the delicate edges of your saw blade or router bit. Simply place the notch of the gauge over the key to adjust the key's width. Then position the key so that the edge of the gauge just contacts the edge of the blade or bit.

Our gauges are a full 3/8" thick and come in a complete set of 5 in 1/8" increments with the measurement engraved on each.

Sizes Included:

• 1/4"
• 3/8"
• 1/2"
• 5/8"
• 3/4"

Uses in your shop:

• These gauges were designed for our BJJ-001 Box Joint Jig but work equally well for setting up any box joint jig on the table saw or router table.
• A must-have for reducing setup time when cutting box joints.