A device to fabricate a solid freeform fabrication object includes a flattening device to lay powder to form a powder layer and flatten a surface of the powder layer, a liquid fabrication application device to apply a liquid fabrication to the powder layer to fabricate a layer object, a fabrication controller to control fabrication of the solid freeform fabrication object by repeating laying the powder to form a powder layer, flattening the surface of the powder layer, and applying the liquid fabrication to the powder layer to laminate the layer object to fabricate the solid freeform fabrication object, and a detector to detect humidity. The fabrication controller changes at least one of the moving speed of the flattening device, the number of rotation of the flattening device, the application amount of the liquid fabrication, and the lamination pitch according to the humidity detected by the detector.
