I'm not qualified to speak to HT, different steels or knife making in any way, but only going from 156 to 220 after a weekend of use is most excellent. Not sure what a weekend of use means exactly, but I know it's easy to dull an edge that much or much more by just chopping some veggies.
Seems like whatever you did worked well and now you have a useful blade. Cool experiment. Congrats. Thanks for sharing.
Seems like whatever you did worked well and now you have a useful blade. Cool experiment. Congrats. Thanks for sharing.