In the past when I wanted to adjust the width of a cut just a hair, I usually just bumped the tablesaw fence with my hand with unpredictable results. To make my fence more precisely adjustable, I designed this auxiliary fence based on the principle of a machinist’s parallel. The jig produces accurate and repeatable results, is easy to build and is adaptable for all kinds of power saws and router tables. The jig’s dimensions and hardware can be chosen to suit the machine and job requirements. I used a 9¡ angle on the slide. Although the half-dovetail slide is not required, it does help hold the parts together.

You can attach the auxiliary fence to a tablesaw in two ways: One, screw it to an existing rip fence, or two, press it into the miter-gauge slot, as shown. Although fastening the auxiliary fence to the rip fence gives a wide range of adjustment, the advantage of pressing the fence into the miter slot is that the unit can be removed while other work is being performed. Later, the auxiliary fence can be replaced with its setting undisturbed.

Boyd Ewing, Depew, N.Y.

Fine Woodworking Magazine, October 1992 No. 96

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