You sound like my dad, he welded mostly TIG as well. Would pretty regularly get small production runs of small aluminum boxes weld together - Thin sheet but always TIG. Just had to have it set up right and move quickly. I could do the welding OK once it was set up - but not good enough to be trusted with the actual job.
He had two TIG welders, atomic-hydrogen, arc, gas, and one MIG dedicated to filling aluminum castings. Those jobs came in frequently enough, that's what the machine was for - nothing else.
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