Abstract: Mixing machine (10) for mixing or amalgamating varnishes, paints and the like comprising two coaxial shafts (14, 15) each one being operated by an electric motor (18, 20), a support (36) for a rotatable lower cap (29) that can be manually moved forward to load a can of varnish and cooperating with a top support (35) carrying a rotatable upper cap (28) to secure the can. The shaft (14) transmits the motion to the upper cap to turn the container about its longitudinal axis; the shaft (15) transmits its motion to a spindle (32) provided with worms (33, 34) in the ends thereof to approach or move away the caps. A fork (39) operated by the shaft (14) turns the caps about an axis which is perpendicular to the axis of the can of varnish. The can is therefore rotated about its longitudinal axis when secured between the lower cap and the upper cap and the can is turned about an axis which is perpendicular to the longitudinal axis of the can.