|
|
|
Working in Metals by Charles C. Sleffel
|
Learning metalworking, metalcraft.
Metal trade education. Hobbysmith.
THE BLACKSMITH SHOP: Hardening and Tempering, Toolmaking. Chapter XXIV, ch.24, Hardening and Tempering, Method of heating steel in forge fires., hardening, tempering, forge fire, furnaces, deep, coke, tuyere, sulphur, gas forge, oil furnace, reducing fire
|
|
|
Working in Metals by Charles C. Sleffel