How to Make Perfect Box Joints

Next, attach the board to your table saw's miter gauge, as shown in the picture above. Slip the miter gauge into the miter slot to the left of the saw blade and check to see that the miter gauge is set to 90-degrees (perpendicular to the saw blade). Then, position the board on one of the long edges, against the miter gauge, making certain that the board extends at least 1/2" past the stacked dado blade.

Use your cordless drill or corded power drill to drive a pair of wood screws through the slots or holes in the miter gauge, and into the block of wood. Be certain that the screws are short enough that the point doesn't poke through the face of the board.