The Miknetum is the newest generation of tumblers, a gentle mixing machine or a hard working kneading machine, which is designed for continuous operation. The machine allows mixing in counter running mode. It is also possible to mix with one arm running ahead of the other. With the arms running in synchronous mode the shovel surface will be increased. The process time will be decreased in any case. Even large batches will have a novel uniformity and consistently better results.