I have an old railing that has hard, crystallized sap that has seeped through. I'd estimate it could be 75 years old. How can I remove the sap without damaging the finish?


If the sap is really hard, you should be able to knock it off with a quick swipe with a scraper. The finish underneath might be compromised, though.

If its still a bit gooey, you might try hitting it with a spurt of compressed air from a can to cool it down.

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