Lumber cut on circular or band headrigs from the outside portions of logs does not have square edges. These pieces must be passed through a machine called an edger that can make two or more lineal cuts simultaneously. The edgings are chipped for use in generating power or for use in paper production. Square-edged lumber must be trimmed to length.
Use this tool to create rounded edges on newly poured concrete slabs. The smooth edges it creates give the concrete a more finished appearance and help prevent future damage from chipping. Home Improvement Encyclopedia
An edger, also known as a lawn edger or stick edger, is a lawn-care tool used to cleanly separate a lawn from a walkway or other paved surface, such as a concrete sidewalk or asphalt path. Edgers may be manual or automated, typically employing a small two-stroke gasoline motor or an electric motor. Use of an edger defines a clear separation between the lawn and the walkway, imparting a finished appearance that is neater than can be achieved by merely mowing over the border of the lawn and walkway (which frequently permits tufts of low-growing grass to hang over onto the walkway, resulting in an irregular or ragged appearance).
The portion of a die impression that distributes metal during forging into areas where it is most needed in order to facilitate filling the cavities of subsequent impressions to be used in the forging sequence.