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Having grown tired of bending and tearing sheet sandpaper again and again to get the size I need, I finally decided to employ the time-honored trick of cutting it with a hacksaw blade screwed to a plywood panel. The jig is very quick to make, and it allows you to simply slip a sheet of sandpaper under the blade and tear upward while holding the blade down.
Make sure to insert a thin washer (or a couple small sandpaper scraps) under the blade at each end to raise it slightly off the panel. For quick alignment of sheets for cutting, I drew reference lines on my board, although you could tack some thin guide strips in place instead. — Gregg Lipanovich
