Only done it a handful of times, but is there a certain technique that should be done differently than extruded aluminum? Castings are fresh from the foundry down the street. Forgot to ask what grade aluminum...John 3:16(2) Miller Pheonix 456(2) Millermertic 252Dynasty 210DXHobart 210MVPDoringer D350 SA Cold SawScotchman 350LT Cold SawWebb 10x50 MillWebb 15x40 LatheGeka Bendicrop Ironworker
Reply:Preheat depending on how big the pieces are.