This vintage book contains a detailed treatise on the subject of steel, exploring in particular how it is selected, hardened, and annealed. Annealing refers to a hardening process whereby steel is heated above the re-crystallization temperature and subsequently cooled in a furnace, water, or oil. Tempering is a process that removes stress by heating steel below the re-crystallization temperature and then is cooling it in the air. This volume contains simple explanations and step-by-step instructions for these processes, making it ideal for novices or apprentices, as well as a handy reference guide for more experienced metalworkers. Contents include: The Workman , Steel , Methods of Heating , Heating Tool Steel , Forging , Hardening Baths , The Lead Bath , Cyanide of Potassium Bath , Hardening Steel , Drawing the Temper after Hardening . Examples of Hardening , Hardening Dies , Forming Dies , Ring Dies , Screw Threading Dies , Hardening Long Articles , etc. Many vintage books such as this are increasingly scarce and expensive. It is with this in mind that we are republishing this volume now in an affordable, modern, high-quality edition complete with a specially-commissioned new introduction on metalwork.