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 In Shop Blog, Techniques

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Q: By accident, I left a pressure-treated 2×4 on my spotless tablesaw for a couple of days. Big mistake! What can I do to remove the rust it left behind?

A: Here is a fast and simple technique for removing light rust. Pull out your random-orbit sander and cut a square about the size of your disc from a nonwoven abrasive pad. A green or dark-red 1/4-in.-thick Scotch-Brite pad is the right coarseness. The dark-red pads will last longer than the green ones. If your sander uses hook-and-loop discs, remove the sandpaper and press right down on the pad. If your sander has a smooth bottom for pressure-sensitive paper, put on a piece of coarse (60 to 80 grit) sandpaper first.

Before you begin sanding, unplug your saw and apply a lubricant to the rusty area with a paper towel. Mineral spirits or WD-40 work well,but put on no more than a very light coat.



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