Hi all,
just had the new version of the drimaster tool on trial. I love it !! No second pass needed on flat surfaces, although on edges etc, you can extract more by a a second pass. I used about 65 litres for a 3 seater, 2 seater and an armchair, so that would be around 60 litres for a 3 piece suite I would think. I am definately going to buy one. I used my powrflite at 100 psi and the control valve on the handtool set at halfway. I found the drimaster much easier on the wrist compared to my cfr handtool. Hope this helps anyone who is interested.
cheers, Pete.