I like my ... oval skews. Tormek revised the fixture so it no longer works as well with the diamond parting tool.
I've sharpened the oval skews on the Tormek but never the diamond parting tools. For that I use the platform on the Wolverine. When I get a moment I plan to machine a jig to hold the tool perpendicular to the wheel. Sometimes I accidentally introduce a slight angle on the cutting edge and have to regrind.
But since I bought all the original jigs that Tormek had (back at the birth of Tormek, I think) and later bought a second (used) Tormek that came with more jigs, I looked through jig drawer and found the SVS-50 which looks like it could have been designed for the oval skew. Inside it has "V"s on either side to hold the edges and a lip that slides along the Tormek.
Long time ago I made an adapter to hold an extra Tormek tool guide bar so I could use it with a bench grinder AND not interfere with the Woverine/Varigrind use. I had to special order the bracket that holds the bar, made the mount of of white oak, cut away to clear the Wolverine handle.
I locked the oval skew into the Vs, set the angle to match what I'd ground by hand, set the bar distance for the bevel angle and with 30 seconds of sharpening on the 600 grit wheel plus a few seconds stropping had a perfect shaving-sharp edge. If not for your post I may have continued forever in my fumbling inefficient ways. Thanks!
I ALMOST remember using the jig for these skews a long time ago but forgot. (worthless memory...)
I do love the oval skews, find them easy to control, great for planing cuts.
Now, do you remember which jig will hold the parting tools?

Maybe I'm using the revised version.
I like my diamond parting tool ...
BTW, this is my gradual evolution towards the perfect diamond parting tool grind. It's getting closer but needs another go. By having the upper bevel curve to nearly horizontal as it meets the widest part of the tool it works more like a skew peeling cut. For me, this angle cuts quite well. The only thing I do with the bottom bevel is hone it lightly to resharpen a bit before going back to the grinder. I find the diamond cross-section shape perfect for clearance on the sides, especially if I
very slightly twist the tool back and forth around the tool axis during the cutting, may just a couple of degrees in each direction.
Another reason I like this parting tool is the width of the cut is PERFECT for sizing with the kind of calipers I often use.
I was looking at some old Craftsman tools and the finish on the steel looked like orange peel paint or a rusted tool that was painted black. Then I looked at fleebay and all the sets looked that way. There must be a reason Craftsman lathe tools were finished that way. Why?
I pulled out all of my old HSS Craftsman tools. While the sides of the tools are not polished, they don't have the orange-peal surfaces you showed. I couldn't find the spindle roughing gouge, prob gave it away.
Could some over-zealous worker have had too much fun spraying? Is it a coating that will scrape off?
JKJ