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内容説明 Welding is a skill any do-it-yourself enthusiast needs in his arsenal. It is only when you can join metal that you can properly repair and create. This book is the perfect introduction for beginners， and an excellent refresher for veteran welders， a work so comprehensive and so complete that most readers won’t need any further instruction. ?How To Weld? starts with a brief history of welding， an overview of different types of welding， and a thorough discussion of safety practices. Longtime welding instructor Todd Bridgum describes various tools and types of metals， as well as techniques and types of joints. Bridgum discusses gas， stick， wire-feed (MIG and TIG)， even brazing， completing each section with a series of exercises that fully illustrate the skills he has covered. This book concludes with six projects， including construction of a welding table， gantry， and jack stands.