Diamond Wire Guillotine 416 Utility Pipe Saw / Cutter. The big brother to Wachs DWG 208 diamond wire saw, the DWG 416 is designed for cutting 4 inch to 16 inch (DN100-400) pipe including steel, ductile, cast iron, concrete (CA), poly, PVC and mixed media. The DWG 416 features exceptional build quality, with stainless steel and aluminum ...