I've written a little piece on hardening steel. I did it in such a way that anyone could understand. No big metallurgical terms http://deepwoodsventures.com/en/content/26-heat-treating-simplified
De acordo com a cor que o aço atinge, seguindo essa escala se tem a idéia quase exata da temperatura que é capaz de chegar uma forja dentro dos processos térmicos necessários pra que seja feita uma "simples" faca.
Chart of junk yard steels. Good information to keep on hand for heat treating / quenching
Anticlastic Heat Treated Copper Wide Copper Bangle di lauramartin
Get Hard: Heat Treating a Knife with Charcoal
Blacksmithing & Metalworking
Rick Eaton, Model 15 mosaic Damascus blade with blued frame that has been engraved and multicolored heat treated, Only Fine Knives
Knives and weapons!
Altered mineral Most citrine is heat treated amethyst! Heat Treated Amethyst from Brazil made into Citrine
Homemade heat treat oven
Ultrafine Glitter Kit for Polymer Clay Paper Crafts by ejrbeads