TIG Welding Aluminum Sprocket Cover ???

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I have an aluminum sprocket cover that I am welding up for a friend. It has a few cracks that need welded up. Other than the normal stop drilling and very good cleaning (cast aluminum) should I weld the inside or outside first......anything else???
Reply:without pictures of the part not much can be suggestedMiller Xmt 350Lincoln Ln-25Ahp 200xSmith Gas Mixer AR/HTig is my Kung FuThrowing down dimes and weaving aboutInstagram http://instagram.com/[email protected]
Reply:Bevel like heck, and weld the inside first. It burns out the oil more so the outside will be cleaner with less bubbling. I think because of spider cracking I would go with 4043.Weld like a "WELDOR", not a wel-"DERR" MillerDynasty700DX,Dynasty350DX4ea,Dynasty200DX,Li  ncolnSW200-2ea.,MillerMatic350P,MillerMatic200w/spoolgun,MKCobraMig260,Lincoln SP-170T,PlasmaCam/Hypertherm1250,HFProTig2ea,MigMax1ea.
Reply:Welding inside first will also give you the opportunity to dial in your balance. I have welded some cast that you could weld just like a new piece of 6063 or any other clean pure metal. Other pieces of cast are very dirty or heavily contaminated and require a lot of cleaning both before welding and with the AC balance.Lincoln precision TIG 275Millermatic 140 MIG
Reply:Yeah die grinder with wide fluted burr, grind a groove so you get 100% pen or close to it...at least material thickness back.....  Miller Dynasty 350Twenty Six HammersThree Crow BarsBig Rock