I am also a fan of knifeguys posts. It would be different if they were long winded AND bad info but it is all pretty useful. I was "into knives" for a long time before I learned how edges actually work and how much better a sharp one really is.
About the Dremel while you can heat up the work going to fast with the wrong bit using it for polishing at a speed that won't rip the disk of 200 grit sandpaper up is pretty hard. Even thick 60 grit disks don't heat up enough to hurt the heat treat.