This grinder is not powerful enough.  My main complaint would be that there is spillage, when I dry grind spices, the powder is all over, most of it stays in, but there is quite a bit that spills out.  Wet grinding, for one it takes very long as the motor is not powerful and if it finally does end up giving a half-way decent product, it has leaked all over, so cleanup is a mess.  Bought it to save time but end up spending more time to clean and grind.  Big disappointment.