Abstract: A method and apparatus for forming a metal housing, such as a blower housing, by successively securing a wrap panel to spaced-apart end panels by a series of welds. The end panels are rotated through a series of steps by a work-holding subassembly while a pair of primary welder subassemblies reciprocate in a linear path through a plurality of weld positions and apply a plurality of spot welds to the circumference of the generally circular end panels joining the end panels to the wrap panel. A panel advancing subassembly pushes a rear end of the wrap panel to assist the forward wrapping movement of the wrap panel around the end panels A pair of secondary welder subassemblies, each having a pinch gun welder, move horizontally along another linear path and perform a plurality of welds along a linear lip of the blower housing. The primary welder subassemblies are then indexed horizontally along another linear path to perform spot welds along a linear aligned section of the blower housing.