The invention is a high-power portable cutting tool which is particularly effective in cutting through sheet metal. The tool can thus be used for extricating accident victims from wreckage. The tool is operated by hydraulic power, and has one movable blade and one stationary blade. The movable blade is curved, and is mounted so as to close onto the stationary blade. The curvature of the movable blade is such that its initial contact with the stationary blade occurs at its free end. The stationary blade is formed on an anvil, anchored within the frame of the tool. The anvil is sufficiently long that its end extends beyond the end of the movable blade. The anvil is anchored within a slot formed in the cover portion of the frame, and is locked into position with a dowel. The mounting of the anvil within the slot is such that the forces exerted on the blade are directed against the heavy cover, and not against the dowel.