In the course of having to cut off some rot around a garage-door casing, I used my rafter square as a cutting guide for an oscillating multitool. I simply drilled a few holes in the square and screwed it to the casing. Doing so freed up both hands. It seems like there are a lot of potential scenarios where this could come in handy.
Anatole Burkin, Southbury, CT
Edited and Illustrated by Charles Miller
From Fine Homebuilding #245
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Elegant in its simplicity. Bravo
A scarf joint is preferable in situations like this. In some situations, that can be done with the set-up above and a circular saw set for a bevel cut, typically 30-to 45 degrees.
If the situation calls for a multitool, use a circular saw to cut a scrap at the desired angle and screw or clamp it to the piece that needs to be cut. Resting the blade of the multitool against the beveled scrap will both guide it and dampen vibration to give a smoother kerf. The replacement trim piece can be cut using the original bevel setting on the circ saw. If desired, the guide cut can be both beveled and mitered to the exterior.