Abstract: A file adapter for a motor driven workpiece cutting tool comprises a power head reciprocating an elongate file coupled to a ram-rod reciprocated thereby on a forwardly projecting axis. The adapter includes a forwardly extending member carried by the power head of the tool and positioning a resistance means for engaging and downwardly pressing the top face of the file forwardly of its coupled engagement to the ramrod. The file is a second class lever with its fulcrum coupled to the ram-rod and its resistance pressured at said resistance means when its cutting means forcibly engage a workpiece. The resistance means preferably comprises a roller on a transverse axis spaced above said forwardly projecting axis and with a periphery thereof engaging and downwardly pressuring the file.

Abstract: A motor driven power hand tool and adapter reciprocating a modified hand file in pressured engagement with a work piece by manipulating a lever resistance intermediate the opposite ends of a file which becomes a second class lever operating with a fulcrum at its reciprocally driven end and with work force applied at its other end, the invention residing in the adapter that guides the file as an aftermarket device and in combination with the power hand tool.