Karl Townsend wrote:
I have an older Lincoln Idealarc 300/300 AC/DC/TIG combo welder that has
served well. Got it for $400.

I can't weld AL for beans with it. My son can make it do anything. he's
pressure test welded many AL irrigation pipes among other projects.

My old eyes can't tell if there's a weld puddle with AL.

Karl



No, I don't think you'll see a puddle with AL.

I never have.

It just goes from solid to welded - or to dripping on the floor...

Richard