Hand-made custom cutting mill of the type used to create daisy wheel molds. The operating speed was 250,000 RPM. The width of the mill tip was 75 microns (0.0029") and it cut a channel in the mold 0.060" deep. The cutters were bathed in cutting fluid at 100 PSI, and there was electronic detection of broken cutters. It took 8-10 cutters to make one mold. The object is in a plastic tube case.