I don't know about them. Years ago I worked with a guy who flattened the side of his Goldblat power trowel. He could get within about 1/2" of the wall. He carried a finishing trowel that was about 6" long, in his pocket. He would bend down and wipe the edge down, while running the machine with the other hand.
In my opinion he was always leaving a line about 6" in, from the wall. He always got paid and nobody ever mentioned the slight line.
In my opinion he was always leaving a line about 6" in, from the wall. He always got paid and nobody ever mentioned the slight line.