quenching metal

ChrisRomello said
Proper way to do it:
Heat to cherry red
Bend to desired shape
Quench in oil!
Metal will now be brittle so you must anneal it!
Place in oven set to 450 degrees
Let it preheat with the oven
Once preheated, turn oven off and let it cool overnight
Ready to use!

My brother and I were super into knife making and tooling and this was the best way to do it!
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then the working end of the wrench will be soft.
I say heat it, bend it and then wrap it in something that will hold the heat in immediately after bending like foil faced fiberglass insulation. You want the bend to cool slow to avoid hardening and being brittle or glassy.