Profile: Mastergrind/E D M, Inc. delivers custom precision tooling & components for the tool & die & plastic molding industries. We provide specialty turning, machining, grinding and EDMing services. We are involved with forming, coining, drawing piercing, extruding, lancing and special shaped punches & dies. Our precision special core pins, dies & inserts for plastic and die casting molds. We produce carbide & steel jo blocks, plug gages-indicators, micrometers, height sets and calipers.