Patent ID: 8667823

Claim:
A tool for modifying a workpiece comprising: an electro-hydraulic tool that engages a first side of the workpiece and defines a channel; a die engages a second side of the workpiece and defines an anvil area at a portion of the perimeter of the die; a wire electrode disposed within the channel; a volume of liquid provided in the channel; a spacer disposed between the wire electrode, the workpiece and the channel that prevents the wire electrode from contacting the workpiece and the tool; a source of stored electrical charge electrically connected to the wire electrode that provides a high voltage discharge through the wire electrode and creates a pulse in the channel that is transmitted through the liquid to drive the workpiece against the anvil area; and an elastic scrap support that engages the second side of the workpiece that is adjacent to a tool steel insert that defines a cutting edge, wherein the scrap support restrains a scrap portion of the workpiece as the workpiece is trimmed.