[flyingfrizzle]

Here is a few pictures of the tank coming together. I let it sit for a month prior to welding or assembling so there was a lot of oxides built up on the aluminum parts already. I Took a cordless grinder with scotch bright pads and cleaned the surface as good as I could over the entire inside of the tank sections. I polished the areas I would weld even better so they would weld decent. It is also very important to clean up the edges from the parts that were shear cut. The dross from the shear and any contaminates would make the aluminum weld like crap and likely would leave pepper looking oxides in the welds. It shows up as linear porosity if not cleaned off. That is one on the most important things about tig welding aluminum. Clean Clean Clean. After cleaning I scrub the surfaces to be welded with a clean stainless steel wire brush that has only been on aluminum then wipe with acetone. Below is the tank half that was prepped and a few other shots of it being put together.