http://www.youtube.com/watch?v=_6yiBqgzrJM

Very cool. I have a few questions from DIY. What is the exact term for that clamp thing he's using to hold the hot metal? Is that an angle grinder at 2:37?

The handheld grinder?

Aye. Angle grinder.

As for the tongs..I don't know the exact name. Pretty sure you could figure it out easy. Check a blacksmithing tool site. I imagine that style could go by several names.

http://www.blacksmithsdepot.com/Templates/cart_templates/cart_browse.php?theLocation=/Resources/Products/Tongs_and_Pliers

the guy didnt temper after quenching?

thx

what does temper and quenching mean?

thx

what does temper and quenching mean?
http://upload.wikimedia.org/wikipedia/commons/thumb/3/3a/Phase_diag_Fe_C.PNG/250px-Phase_diag_Fe_C.PNG

well, when you get steel, its relatively soft. by heating up to the gamma stage (austenite), which is close to its curie point (temperature at which it becomes non magnetic).

then you dunk it in a cool liquid to lock the particles into shape before it becomes the alpha stage again (ferrite). water is used, but oil is a much better option, because water boils at 100C, in which it doesnt make contact with the metal as well

at this stage, the metal is in the martensite phase. its really hard(and so keeps a good edge), but its brittle

tempering is a process in which you heat the metal at 240C for a period of time, which makes it only slightly less hard, but improves the toughness by a large amount. the more you temper it, the more tough (and less hard) it gets