Slitting experiments were carried out in a CNC milling machine (Emco Concept Mill 155). The specimens were clamped from one side away from slit and gauge, so the other side could deform freely and recorded strains were correct (Fig. 13.10). A circular cutter 0.2 mm thick and 23 mm in diameter was used. The rotation speed of the saw blade was 5000 rpm. The slitting was carried out in successive depth increments of 0.3 mm to a final depth of 2.4 mm, which is equal to the half thickness of the specimens. The depth increment was equal to the thickness of each layer of the laminate. Figure 13.10 shows the relative position of strain gauge and cutter in the slitting experiment.