This book is a comprehensive guide to metal trades, written by Rufus Rolla Lutz, a well-known American metallurgist. It covers topics such as metalworking, welding, casting, and machining. The book is an essential resource for anyone interested in the metalworking industry, and is especially useful for engineers, craftsmen, and students of metallurgy. This work has been selected by scholars as being culturally important, and is part of the...