A printer system for developing a three dimensional (3D) printed structure includes a plurality of spaced apart sets of printing devices; a conveyor system arranged to serially convey a print medium past each set of printing devices, whereby the print medium receives printed voxels from each successive set of printing devices to form successive layers of voxels into a 3D printed structure upon the print medium; a placement mechanism configured to place an object upon layers of the 3D printed structure, the placement mechanism comprising a translation mechanism configured to translate the object at substantially the same velocity as the conveyance of the print medium during placement of the object; and a plurality of curing mechanisms interleaved between the sets of printing devices fur curing the printed voxels. At least one printhead of a first of the plurality of spaced apart sets is operable to print voxels simultaneously with a printhead of a second of the plurality of spaced apart sets, whereby multiple layers of voxel are formed at the same time.