I spent a while last night tig welding mild steel. Sometimes little sparks (size of a pinhead) would fly, as though there were very tiny explosions in the weld puddle. (extremely small) Any ideas why that could be happening?
Some possibly relevant things.
- I did mess a little bit with adjusting air flow. I got a flowmeter which was not working, so I put the old pressure regulator back and reduced pressure. There were no characteristic brown spots on steel, so, I assume the flow was adequate, but less than I had before.
- I installed a water recirculator.
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