Quote:
Originally Posted by GregWeld
So Sieg and I were texting back and forth.... regarding TIG welding.
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First I cut a bunch of 5" long 1" square .50 wall tubing.... deburred it -- cleaned it with NON chlorinated brake cleaner - and scuffed it quickly with a 3" roloc disc.
The rule of thumb is ONE amp per ONE THOUSANDTH material thickness.... and since I'd been telling Sieggy the weld master to cut his amperage I figured I'd stick to that rule - so 50 amps it is....
Well.... I could hardly get a puddle going - and by the time I could get puddle and try to move it along and dab --- #1 my auto darkening helmet kept lighting up! Which blinds you momentarily - and trying to weld at this low amperage was just so SLOW.... and not a good puddle at all! It was like REALLY DUDE! YOU SUCK!!
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I only held a TIG torch 3 days a week for about 9 mo. way back in 1990 so I know less than everybody here. That said ,and I'm sure I'm late to this , the problem with the puddle at 50amps was you where not welding .050" tubing together you are welding TWO EDGES of 1" .050 wall sqaure tubing. The 2 edges butted together are closer to .100 thick each and then have nice heat sinks running away from the weld (2 on each side of the weld) did you try to weld the tubes together end to end?
It's the same as doing a T weld in the middle of a plate, the "leg" acts thinner because the base has more area cooling the bead area.
Just a thought from out on the edge.
Sorry I started reading this thread then realized it was 3 years old .