| Topic | Summary |
| Safety first |
Always follow equipment and workshop instructions, including the use of recommended personal protection equipment. |
| Hardening & tempering |
By heating and then swiftly cooling certain kinds of steel changes the way that the elements in the alloy are arranged, resulting in a harder material. |
| Carbon-alloy | When carbon and other materials are alloyed with iron it forms steel. Changing the amount of carbon will change the hardness, ductility and toughness. |