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rasret01
02-12-2011, 03:25 PM
I heat treated a 10" O1 blade today the way I always do. Soak for 20 min at 1450-60 in my sugar creek kiln, and edge down into warm (110-120) peanut oil. The blade didn't crack :biggrin: it wrinkled :what!:. About an inch of the edge looked like a dog trying to smile. I had ground the blade to the traditional dime thickness - as usual. Also the edge didn't scate a file like it normal and there was absolutly no scale on the blade when it came out of the oil. I fixed the edge, cleaned the blade and tried again - same result.

Can anyone tell me what I'm missing?

Gary Miller
02-12-2011, 07:07 PM
that's weird, i have had them crack,twist and bend but the blade was always glass hard. sounds like you got some mismarked steel

rasret01
02-13-2011, 06:53 AM
Gary

I might have thought so too, except that I also got two perfectly normal blades out of that same piece of steel.

Dick