When we reach for a piece of sandpaper, we rarely think about the stuff that’s glued to it. It’s sandpaper, right. It’s just abrasive sand. Except that it’s not – there is no sand on sandpaper. That abrasive can be any one of several different materials, and each material is made to abrade the work in a different way. If you know just a little bit about each of these materials, you can match the abrasive to the work. This, in turn, will reduce the time you spend sanding and help produce better r

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