They were looking for a low-priced device to abrade paint from large areas of wood windows, doors and a wooden staircase. It worked. However, the included Staubauffangbeutelchen is a joke - the vibrations triggered after some time inside the filter membrane and often it just fell during operation from. Better: use industrial vacuum cleaners with switch socket. This also increases the pressure, so that the grinding goes almost without effort. What really bothered the stair-grind, was the height of the device. The treads of the steps could not be completely grind so because the device does not fit between the stages! Alternative Festo (for loads of money)? General: random orbit sanders have very high removal rate compared to the orbital sander.
