iii Introduction This edition of the GMAW/FCAW Handbook is an updated and compiled version of two textbooks by William H. Minnick previously published by The Goodheart-Willcox Company, Inc. This new edition provides a simple but complete introduction to the various welding processes of GMAW and FCAW. The handbook covers the principles, equipment, techniques, processes, and safety involved with these welding methods. Several portions of the previous editions have been completely rewritten and updated according to current industry standards. This edition also includes all new color photos, the vast majority of which were taken by the author. In addition, illustrations have been redesigned, adding color and detail for improved clarity and learning value. Gas metal arc and fl ux cored arc welding processes are widely used in manufacturing and construction fl industries. These processes continue to evolve and be refi as new technology is developed. Careful study fined of this textbook and practice with the techniques presented allows welding students to progress from novices to profi entry-level welders. Advanced students and professional welders will find ficient this text an informative fi and valuable resource throughout their welding career. Instructors can rely on this textbook to provide accurate, up-to-date, and thorough instruction that is designed to prepare every student for a welding career. Students: As you continue to advance with your welding skills, remember that every weld you make is your personal signature or trademark. Take pride in your skills and make each weld as if your career depended on it! James Mosman