PERFORATED IMPELLER BLADES

A method of making an impeller (100) includes building the impeller (100) in a layer by layer process in a build direction along the rotational axis starting from a base of the hub (102). The plurality of blades includes a plurality of perforated blades that support the shroud (106) during additively manufacturing the impeller (100). The method can include installing the impeller (100) in a fuel pump, air compressor, or the like, without removing the perforated blades from the impeller (100).