Love it, thanks for the nerdy deep dive. I appreciate the details.

So I think I did a pretty solid job. Turns out after cleaning there are two layers, the inner part which is the blade and another bit essentially enclosing from both sides. You can see the color changes. With a few tens of passes on the 400 grit I brought the blade down to the lowest dent and then rounded it off. Cuts through veggies like butter and I will keep an eye on additional cracking.