How Does a Stud Finder Find Studs?

If you want to hang a picture, install a bookshelf or speaker shelf, put up a cabinet or suspend a wall mirror, you’ll likely want to test your drywall to find studs for maximum support. Some people use a small hammer to tap along the wall, listing for a change in tone to find studs. Others hold a bare lamp against the wall to look for telltale taping and nail heads covered by paint.

But the easiest way to find studs is to use a stud finder. There are two basic types of stud finders on the market that find studs using very different methods. A magnetic stud finder will find studs by reacting to the magnetic fields generated by steel nails in the stud board.

An electronic stud finder finds studs by measuring wall density. Magnetic stud finders are simple tools that contain a magnet. By passing the magnetic stud finder very slowly across the wall, you can verify the location of steel nails used to affix the drywall to studs.

This type of stud finder is very inexpensive, but has ... more.

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