In the picture above, the diameter of the larger waterjet stream on the right is 33% wider and the area of this diameter is 78% greater. This makes the energy density lower than the smaller orifice/nozzle combination. The result is that, as shown earlier and repeated in the graph below, cutting with two 0.010”/0.030” heads is more cost-effective and productive than cutting with one 0.014”/0.040” head in thinner materials (approximately ½” and thinner).