Supported Shear Cutting Technology In the supported shear cutting method tooling is ground to fit both the O. D. and the I. D. of the tubing. The internal tooling, the punches, and the external tooling, the dies, are in two sections and surround the tubing being cut. When the end of the tube comes against a stop finger, the hydraulic system moves the floating section of the tools in a vertical and horizontal direction. This creates a shearing action against the stationary section.