Welding Aluminum

[Bobbyhotrods@comcast.net]

I'm usually able to run whatever aluminum's getting welded over to the anodize 
shop where I caustic etch the stuff to clean it (hugely important). Of late 
I've been using a muriatic bath, hardware store stuff maybe 50/50 water, here 
at home with good results. I leave it in a few minutes, then hose it off.
This won't remove grease or anything, just the "skin" that makes for poor 
results especially on thinner stuff.