A method for forming an enclosure for enclosing internal electronic components of an electronic device is provided, which comprises: performing a first injection molding process, the first injection molding process forming at least a first wall of the enclosure; allowing the at least a first wall of the enclosure to solidify; thereafter performing a second injection molding process, the second injection molding process forming at least a second wall of the enclosure, the at least a second wall of the enclosure fusing with the at least a first wall of the enclosure during the second injection molding process, the at least second wall of the enclosure forming at least one different side of the enclosure than the at least first wall of the enclosure; and allowing the at least a second wall of the enclosure to solidify, the at least a second wall of the enclosure being integrally formed with the at least a first wall of the enclosure to thereby form a single-piece multi-walled enclosure.