How Does a Stud Finder Work?

A stud finder is a handheld tool that is used to locate studs behind walls by moving the device back and forth on a wall. It helps to know where studs are when hanging a picture, mounting a shelf, or hammering a nail into a wall for just about any purpose. Hammering straight into drywall does not make for a very secure mounting connection and can potentially lead to a hole being punched right through the drywall.

Studs are beams made of either wood or metal. The most basic type of stud finder is a magnetic stud finder, which work with magnets. The magnets in a stud finder easily locate a beam if it is metal.

If the beam is wood, a magnetic stud finder locates the beam by finding nails or screws that were put into the beam during construction of the wall. Newer technology has brought electronic stud finders to the market. Electronic stud finders locate beams by sensing differences in density behind walls with what is called a capacitor plate.

The capacitor plate measures the amount of ... more.

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