FYI you can grind your own shape from whatever barstock, flat or nrs. Might take a while to grind much of a Thompson tool away. I just use cheaper M2 hss scrapers, typically ~5/16 thick. I have and use 1/2”, 3/4”, 1”, and 1-1/2” widths, various shapes. That’s one reason they are cheaper M2 - try lots of sizes and shapes, and not concerned about grinding a new shape on the end when I need it. For bowls I mainly use a 1-1/2” wide flat top ground in a “V” for shear scraping the OD, and another 1-1/2” wide ground similar to Robo - bit of a flat then curving around left, its nrs. I like the mass of the wide ones.