Yes, it was a quick lesson for me after the first use. It did stain rather quickly and was a bit of a surprise for me, resulting in more research. I will no longer be going for this finish in the future. I'm looking into different finishes right now.
As for the HT process, I ramped them to 1575 deg Fahrenheit and let it soak for 5 minutes before quenching in warmed canola oil. I followed with a 400 deg temper for two hours, twice.
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