A double mixing plastering machine like the M-tec Duo Mix is a plaster spraying machine that mixes the material twice, that is to say first the dry material is mixed with a constant flow of water in the mixing chamber and the remixed again in the mixing tube itself. The material probe controls the level of mixed material and controls the supply of more material to the mixing tube.
the advantage of a double mixing plastering machine is the better quality of the mix, higher output of each bag of material and the seperation of dry and wet material at all time of the mixing process.
The double mixing mortar pumps are mainly used nowadays in 3D construction combined with robots.