[Warrenh]

1/4" butt joint with no gap and no bevel?

Just curious as to why is all.

I've seen the black deposit when a student doesn't wait for a clearly defined puddle and tries to add filler too early.

Dave ......had this been a job for a customer I would have done the preparations you described above. I was merely experimenting with 1/8" tungsten......i never welded with it before. I was surprised at how the welds turned out.....especially with my lack of experience welding aluminum.

I use 1/8 exclusively. I call the end for thicker stuff and sharpen for thinner. It keeps me from worrying about too many amps. And I like the welds better.

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