David hit it. Don't buy it if you can try it for free. The corollary is don't change the grind after you buy because you're not getting the results you want until you're sure it's the grind and not inexperience. Lots of metal and dust below a bunch of 8" variable speed fully jigged and rigged grinders went for naught because the new kid didn't experiment enough to find the sweet spot in the pattern at hand. Or get a hand finding it.
Stand clear, rest near, and cut the wood as it wishes to be cut.