This circ-saw fence helps me cut squarely and precisely to a mark. The sliding jaw locks in place with a thumbscrew, keeping it snug against the workpiece.

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This circ-saw fence helps me cut squarely and precisely to a mark. The sliding jaw locks in place with a thumbscrew, keeping it snug against the workpiece.

The jig shown is for my left-bladed saw, and the 112 " width to the right of the fence represents the distance from the edge of the saw base to the blade. On right-bladed saws, this dimension will be longer. In either case, leave more than enough to trim it with your saw after assembly to get a precise zero-clearance edge.

After that, to make a dead-on cut, simply align the end of the T-square head with the marked cutline, close and secure the sliding jaw against the workpiece, and run your saw's baseplate along the fence.
—Chris Boenig, Clarksville, Tenn.