Optical Machining We currently machine parts for the Optical industries using the following materials:  303 Stainless Steel, 304 Stainless Steel, 316 Stainless Steel, 416 Stainless Steel, 430 Stainless Steel, 17-4PH, 1018 Steel, C1117 Steel, 12L14 Steel, 1215 Steel, Cold & Hot drawn Steel, 360 Brass, FC Brass, 6061 Aluminum, 2024 Aluminum