My previous practical experience with this grinder is extremely positive. I already rubbed with her carrots, onions and potatoes so. The grinder is very easy to assemble and disassemble again, which went very easy. Cleaning is also very easy. The clamp can be the rubbing machine very well attached to a table and moves not while rubbing process. The grinder itself is made of sturdy metal, the friction drums are made of stainless steel. By rubbing carrots or carrot, the white inside colored by the carotene slightly orange, but can be removed with normal cooking oil again. With a bit of cooking oil can also screw the friction inserts and oiled in the winch, thus these parts can be screwed together again easily disengage. Likewise, should from time to lubricate the screw thread of the clamp with a little cooking oil one.