Grind the teeth off. That is the best edge but the back works also. The radius section on the ends is handy for detailing. You can use a Dremel and a small grinding wheel to regrind them into different shapes.
Scraping usualy gets a better finish than sanding faster. IN some woods like maple and boxwood it's the only efficient proposition. Maple for example makes it difficult to skip sanding grits because the previous grit scratches will show unless you use power sanding or are prepared to make a career of it.
Take for example the carving in the video below. There was zero sanding on that. It is self harvested Rock Maple from NJ. Yes it took along time, BUT it goes faster if you use a mallot for everything AND scrape not sand. I did grind some areas with 80 Grit sanding belt pieces glued to a shapped stick. Then right to the scrapers and sharp chissels for final finishing and polishing.
http://www.youtube.com/watch?v=dyBWrlobktw&feature=plcp
