Things You Will Need
The ink stamp states the species and grade of the wood, as well as the sawmill from where it came. Typically, lumber companies place the ink stamp out of sight. However, oversights happen and you might have to remove unsightly ink from your OSB wood.
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Put on a pair of rubber gloves.
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Pour lacquer thinner into a small plastic container.
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Saturate a scouring pad in the lacquer thinner. Use it remove the ink from the OSB wood. If the ink does not lift, continue with the remaining steps.
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Secure a fine-grit sandpaper onto a hand-sander. Plug in and turn on the sander.
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Sand the ink stain gently with the hand-sander. Sand only a few passes at a time, and then check the ink spot. Do not sand too deeply or you will create a low spot on the OSB wood.