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I thought those magnetic stud finders were just a gimmick.

Tried one on my 1940s plaster walls and it found every single nail in the studs. Anyone have a good trick for marking them without making a mess?
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2 Comments
david_fisher37
But have you ever tried using one on drywall with metal studs? It goes crazy and beeps at everything, even ductwork or pipes. Those old plaster walls are basically the only place they work right. For marking, just use a tiny bit of painter's tape and make a pencil dot on that.
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the_angela
the_angela16d ago
Tell me about it. I tried scanning a wall in my kitchen last week and it lit up like a Christmas tree over every single bit of conduit. Ended up with so many false positives I just gave up and used the old knock-and-listen method. Those things are basically useless on any modern construction.
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