unpacked upon receipt, the machine is assembled (a breeze), and immediately put into service on a car hood scratched by an abrasive sponge. in 15 minutes, the result is stunning .. the machine starts gradually which avoids (using pin foams) the projection of abrasives, the rotational speed adjustment is linear and smooth, the weight of the polisher is sufficient to have only the effort to direct the latter to provide ... in short, for a good handyman, this is a very good machine making exactly the services expected by. very happy with this purchase