A very strong grinder indeed. Slightly worrying when it starts up as it physically jumps and flashes from beneath. The flashing is similar to that on a powerdrill and the jumping is controlled by holding the grinder down with the handle on the lid. There is no safety measure blocking the blades from working when the lid is off so be very careful when using, never switch it on when the lid is off. Apart from that it does exactly what it says it will do. I'm assuming I will easily be able to fasten the grinder to a wooden worktop with thick screws/bolts if I remove the rubber feet (the holes are already there). Fine powder is easily achieved within 3 x 10 second bursts. I've turned crushed sesame fibre into flour so far but can see it will work very well with all types of spices. Responsive customer support too.