Daniel- I can certainly see why you would think that, but scrubbing them by hand in the deep sink is the best option. Any powered method flings that stuff everywhere.... and either the "vinegar + forge scale sludge" or the thin layer of salt are both
NASTY things to get flung around. As both of them will cause all kinds of nasty corrosion on whatever they land on.
That's why my salt bath rig has so much brown on it, from molten salt dripping on it when I go from salt to quench really fast. :grumpy:
The last thermal cycle is a sub-critical anneal, and leaves the steel very soft and super easy to grind/cut/file. I know some folks pull the blade out, let it cool to black, and then quench it. I know a couple of my friends put them in the kiln at 1250F, set the oven to soak a couple hours, and then just leave them in overnight (so they'll cool down slowly with the oven). I've done it all 3 ways, and really couldn't see any difference. I'm not saying there isn't! Just that I couldn't see any. :foot:
52100 is a bit of a goofy steel in this industry, because it seems to get a lot of people riled up almost as much as politics and religion.
And FWIW, I don't claim that there's no way to improve upon what I do with it... I just know that what I do is consistent, repeatable, and results in a blade that will do what it's supposed to do.