I kinda meant a bit of both those last replys. Brain farts. Alzimers, or short term memory loss, either way, we've all heared or read about it, had it, or know someone who has had problems that could be associated with Aluminum dust and vapors. Youngwelder, lighten up a bit, brain farts are a natural human thing. I'm not by any means an expert about welding safety, my point is that no matter what kind of metal fusion you choose to do, they ALL have side effects and related health concerns, acute and chronic.