O le Cork Carkde Next Mill e masani ona faʻaaogaina mo masini uʻamea. O a matou GM550 faasologa o loʻo fautuaina e faʻagaoioiga Carbon Steel, Alloy Steel, lafoina uʻamea, CODCE Iron ma le 'apamemea ma isi mea e talafeagai ai le HRC25 O a matou faʻasalalauga e fautuaina ai a matou faʻasalalauga i lalo o mea i lalo ole HRC45, ua maeʻa le uʻamea pupuʻe, kaloteni O la matou vaega o le HR o loʻo fautuaina e faʻagaioia mea i lalo ole HRC50, o le ata ata lea o Sheel, apamemea.