Stereolithography machine for producing a three-dimensional object and stereolithography method applicable to said machine

A stereolithography machine comprising:

• a container for a fluid substance, the fluid substance in a liquid or a paste state and suited to be solidified through exposure to radiation;
• an emitter that emits said radiation, the emitter operable to selectively irradiate a layer of said fluid substance located adjacent to a bottom of said container in order to solidify the layer of said fluid to form a first solidified layer;
• a modeling plate suited to support said first solidified layer;
• an actuator suited to move said modeling plate with respect to said bottom at least according to a modeling direction that is perpendicular to said bottom;
• a leveler associated with a power device, the power device configured to move said leveler with respect to said bottom of said container to cause said fluid substance to be redistributed in said container;
• said power device being configured to move said container in each one of the two opposite senses of a direction of movement;
• wherein said leveler comprises at least two paddles extending mainly in a direction perpendicular to said direction of movement, said at least two paddles arranged on two corresponding opposite sides with respect to said modeling plate,
• wherein the first solidified layer is formed in a first location in the container and a second solidified layer is formed in a second location of the container;
• wherein said power device is further configured to move each one of said paddles perpendicular to said bottom and to immerse one of said paddles in and extract said one of said paddles from said fluid substance independently of the other one of said paddles.