Negative Rake Scrapers are low risk tools that are great for refining the final shape of your work. And although the finish they leave on the work is not quite as clean as shear scraping, it is often clean enough to start sanding with 150 or 180 grit. They are low risk because, unlike when conventional scraping, they are "neutral" in the sense that very little energy transfers from the work to the tool, so little that they can even be used safely directly into end grain on face work! There is a downside, however, which is that the burr on a negative rake scraper is fragile and does not last long. No need to fret, though, because there are several things that we can do to mitigate this downside.

Cover tool: Negative Rake Bowl Scraper (reground from an Ashley Iles scraper.)

Woods:
Black Walnut
Ash (The green bowl from the Sep. President's Challenge)
Hard Maple (spindle)
Soft Maple (endgrain hollowing)