What Is a Plunge Router Used For?

Capable of all routing work, a plunge router performs tricky applications, such as cutting blind mortises by lowering the bit into the work to a preset depth.

Routing

A plunge router cuts by guiding a high speed rotary bit through the wood. The shape of the cut is controlled by the contour of the cutter and the depth setting.

Depth Adjustment

On a standard router presets, the cutter is preset to the desired height. On a plunge router, a stop marks the depth setting, but the cutter initially is clear of the work surface.

Blind Rabbets

To cut a groove that stops short of the work piece edge, a standard router must be carefully tipped into the work, often resulting in an inaccurate start. A plunge router can be positioned securely above the starting point and simply pushing down lowers the bit to begin the cut.

Using Jigs

If a rectangular frame determines the outer edge of a panel molding, the router must be precisely lowered against it. A plunge router moving on a spring loaded frame locks accurately into position without mistakes.

Advantages

Although much routing can be done with a fixed base machine, the plunge router expands possibilities. A plunge router increases the quality of the finished piece and reduces overall labor.

Resources

• Plunge router applications video