annealing question

[BDann]

What do you guys think about using a charcoal chimney starter to anneal a farriers rasp?  I've got several of them, and would like to get into knife making.  It would be great if I didn't have to go buy a bunch of stuff to do it.  Any suggestions?

[Ragnarok Forge]

You can heat the knife blank or moderate size steel bars in a charcoal barbeque.  The cooling process is easy enough you can get vermiculite in the gardening section of major stores and put it in a metal garbage can.  Just stick the hot steel in the vermiculite and let it cool.

[prarieboy]

I get by usin a few extra briquettes .Gotta have some under and some over the rasp or file or chunk of plow steel. It works for Me and Ya get to Eat somthin good from the grill!
Need enough to so it slow cools.
C-Ya Bob