Getting negative sori

mete said:
Years back on this forum someone asked me to explain the curve and I refused as too many things are happening ,too hard to predict. The japanese steels are not high carbon ,1070 at most. They are water quenched .You have really complicated the whole process. I don't really know what to suggest .
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I would love to hear anything you have to offer :)

You gota admit no matter what the outcome that yake ire video is way cool
 
Well I tried a water quench tonight and thought I pulled it off for about 10 seconds then ping! Doh! I did get positive sori this time lol. I heated the water to about 120, pulled it out of the kiln and quenched and agitated it for 10 alligators, then I pulled out and right when I saw it slightly curved the right way, ping! Even though I cracked my blade it was still a lot of fun and exciting. I'm sure it didn't help only grinding it with a 36 grit belt.
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All right, today after work's experiment was grind in sori and measure the drop after quench. I had a piece of 2in x 3/16 80crv2 from Aldo at NJSB. I made a 19in blade 26in overall wakizashi inspired blade. I cut out my shape and rough ground it, then in my kiln I normalized it 3 times, then quenched in Parks 50. It dropped about 7/16th at the tip.

I horizontally quenched it, would vertical quenching make a difference in this case with a curved blade in 80crv2? It's a pain to keep transferring from my 5 gallon bucket to my quench trough.
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