Re: Warped cast aluminum tank flange

[billw]

Usually those are quite warped by the time you get them apart. I’m as cheap as anybody but it’s a lot of work. I take mine to an automotive machine shop. The guy puts the parts on a giant, horizontal belt sander, used to true up heads and other parts. He’s done in five minutes, they are perfect and he charges me $20. Time=money=sweat. I gotta say, though, that if you’re only out by the .004" in your picture, even I might try it myself.

Long live American manufacturing!