428 Modern Welding Copyright Goodheart-Willcox Co., Inc. Two-position oxygen cutting lever A B C D E Acetylene torch valve Oxygen torch valve Goodheart-Willcox Publisher Figure 15-34. A welding student using a cutting torch mounted to a motorized carriage to produce a beveled edge. A—This semiautomatic oxyfuel gas cutting outfit is turned on. B—After lighting the torch, the welder adjusts the acetylene torch valve to provide the right amount of fuel gas. C—The operator opens and adjusts the oxygen torch valve to create the proper neutral cutting torch flame. D—The operator opens the cutting oxygen valve to ensure the correct flame exists for efficient cutting. E—The cut continues as the motorized carriage automatically moves the cutting torch along the length of the cut. Goodheart-Willcox Publisher Goodheart-Willcox Publisher Goodheart-Willcox Publisher Goodheart-Willcox Publisher