So this product really does grind coffee and if you leave it on for about 10-15 seconds it will do a decent job. The noise level is absurd though, it's REALLY loud like a grill if left on for more than 5 seconds or so, pretty loud so it's pretty annoying to use. Also, the grind can get pretty uneven, which I think. to be expected from a knife sharpener (compared to a burr sharpener, for example). Annoyingly, like I said, for a smoother grind you have to keep it on longer than you'd like due to the ridiculous noise level. I will say that a big plus of this product is the different grind settings. I use several different types of coffee makers that require different grind settings and it's really nice to have 5 different grind settings and they actually work with those advertised settings. The gross will be gross and the subtle will be fine. All in all a decent product for the price, just wish it wasn't so terribly loud.
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