If you've ever tried to adjust the angle of your miter saw by one-tenth of a degree, you already know how hard micro-adjustments are. Here's an easier way: Slap a few sticky notes on the fence, make test cuts and add or remove sheets until you get exactly the angle you want.
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Wooden sheath for cook's knife
Chisel and Plane Iron Sharpening Jig - Sharpening Tips, Jigs and Techniques | WoodArchivist.com