A forced action mixer for grouting, flooring, concrete renovation, resin-bound materials and epoxy, used indoors and outdoors and narrow enough to roll through most doors. The SoRoTo 100 L runs on 240 V or 110 V site power with a 1.1 kW motor at 30 rpm, holding 100 L of mix in a 106 L drum and mixing a batch in 3 to 5 minutes. Telescopic legs set the height from 109 to 127 cm for discharge into a bucket or wheelbarrow. Weighs 96 kg; 68 cm wide and 80 cm long, with steel blades.