An apparatus for manufacturing a three-dimensional object by solidifying multiple solidifiable materials, comprising: a first solidifiable material source comprising a first container (30, 130) having a transparent bottom and containing the first solidifiable material (31, 131); one pattern generator (22, 122); a second solidifiable material source comprising a second container (34, 134) having a transparent bottom and containing the second solidifiable material (33, 133), wherein the second solidifiable material source is spaced apart from the first solidifiable material source in first direction defining a first axis (x) and the second solidifiable material (33, 133) is different from the first solidifiable material (31, 131); and a build platform (24, 124) movable along a second direction defining a second axis (z), wherein either (i) the build platform (24, 124) is movable along the first axis (x) relative to each of the first solidifiable material source and the second solidifiable material source, or (ii) each of the first solidifiable material source and the second solidifiable material source is movable along the first axis (x) relative to the build platform (24, 124), wherein the build platform (24, 124) and the pattern generator (22, 122) remain in fixed alignment with one another in a plane perpendicular to the second axis (z), and during an object solidification operation, the one pattern generator (22, 122) projects solidification energy through the first container transparent bottom or the second container transparent bottom, further comprising a cleaning station (32, 132, 332) between the first solidifiable material source and the second solidifiable material source. a first solidifiable material source comprising a first container (30, 130) having a transparent bottom and containing the first solidifiable material (31, 131); one pattern generator (22, 122); a second solidifiable material source comprising a second container (34, 134) having a transparent bottom and containing the second solidifiable material (33, 133), wherein the second solidifiable material source is spaced apart from the first solidifiable material source in first direction defining a first axis (x) and the second solidifiable material (33, 133) is different from the first solidifiable material (31, 131); and a build platform (24, 124) movable along a second direction defining a second axis (z), wherein either (i) the build platform (24, 124) is movable along the first axis (x) relative to each of the first solidifiable material source and the second solidifiable material source, or (ii) each of the first solidifiable material source and the second solidifiable material source is movable along the first axis (x) relative to the build platform (24, 124), wherein the build platform (24, 124) and the pattern generator (22, 122) remain in fixed alignment with one another in a plane perpendicular to the second axis (z), and during an object solidification operation, the one pattern generator (22, 122) projects solidification energy through the first container transparent bottom or the second container transparent bottom, further comprising a cleaning station (32, 132, 332) between the first solidifiable material source and the second solidifiable material source.