[BeasleyRB]

Re: Mig Aluminum - Try to watch out for that crater at the end of the weld. Cracks start in craters as the weld pool cools and the material shrinks. Also, the welds should be at worst flat, better if a little convex (higher in the center). Use the right filler material for the base metal both for strength and appearance. Miller and Lincoln both have a lot of published materials on Mig and Tig aluminum welding. Buy your welding equipment and supplies from a welding supply distributor as opposed to Lowes or some tool company. You can negotiate for as good a price (or better) AND get all the consulting and welding hints you need.