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Old 08-16-17, 06:50 AM   #8
jeff5may
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Welding sheet aluminum takes a different approach than sheet steel. With a DC mig rig, the weld must be laid down in a hurried fashion. There is a fine line between a weld that doesn't stick and blowing holes in the base metal. Thin aluminum sheet really likes to warp as well, so if the material is not held in it's intended final shape, it will end up bent and twisted upon cooling. A lot of the time, you have to do the welding in little pieces spaced far apart from each other and work your way back and forth along the material to end up with a continuous weld.
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