Dan as far as sharpening I made one of those tools out of a BB square scraper. I adjusted my platform on the wolverine to match the bevel or front of the scraper and sharpen the front. I then move the tip of the handle to the left and sharpen the side grind the same as the front. You have to sharpen it though with a slight angle for the dovetail. Has worked well for me for over 2 yrs since I made it. Since you already have it shaped I would match the front set my platform and go. Turn it and sharpen the side the same angle. Saves a lot of messing around time.
As far as the dovetail goes I to between a 1/8" to no more than 3/8". I snug it down pretty good but not tight enough to tear or crack the wood. I don't worry about the black because I clean that up when I do the bottom when mounted in my vacuum chuck or donut chuck.
Retirement: That’s when you return from work one day
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