The miter gauge that comes with the Porter-Cable PCB270TS is typical in that it comes with a small protractor head to push the work piece with (there is a bit of side-to-side “slop” that needs to be adjusted out, more on that in a upcoming post). There are a couple problems with this design, and the first is safety. It’s preferable to have support for the wood as close to the blade as possible. Second is accuracy. Any movement of the work piece will cause inaccuracies, especially with smaller pieces.
To address this issue, there are a couple options: make a miter gauge extension utilizing the existing miter gauge, or purchase one.
Admittedly, this solution is only viable if the extruded aluminum is freely available, as 80-20 quite expensive. It might make more sense to purchase one (see the links below). The assembly is quite simple: 1/4-20 carriage bolts, washers and wing nuts were all that was required to attach a 3″ x 1.5″ x 24″ piece of 80-20 extruded aluminum to the Porter-Cable supplied miter gauge. It’s fully adjustable, and can easily have stops and clamps attached.
Miter Gauge Extension Kits:
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