is one of my favorite tools. I've been using it for years to smooth wood, but it seems to be the perfect tool to smooth an epoxy coat, neatly decapitating runs & drips that I didn't even know were there. The thing is, that it cuts the material, rather than grinding it. The debris looks like tiny planer curls, much easier to clean up, and less hazardous than filling the room with toxic dust. It even works well on slightly "green" epoxy, that would clog sandpaper.
I made a little demo video about the scraper. Its basically the same as CLC's, but here it is: