I bought one of these and the installer couldn't get it to work. Bendpak sent a second one - and we still can't get it to work. I love the concept, but the part doesn't seem to be ready for prime time yet.
I am getting pressure off the cylinder to the air bottle, but there is no pressure...
No, it leaves a line about 2-3 inches from the wall. I used featheredge compound to cover it and feather the edge to the floor. I thought this would help move water away from the walls and down the floor. You could also rent a hand-held grinder with a diamond bit - they have them at Home...
I rented one a couple of weeks ago to grind off some old epoxy that had lots of lift areas. The EDCO was quite impressive - though you have to be careful as it takes the paint and top layer of concrete off quickly.