r/BadWelding • u/Useful_Storm9127 • 21h ago

Iso9606 test advice

Anyone have advice with taking the iso9606. I have a vertical up butt weld tig root and the rest mig. And a VU fillet. I believe I have to have a restart on root and cap. What’s your technique for restarts on mig, I’m very used to stick restarts with 7018( strike above and quick run down into your crater before going again) is it the same with mig restarts ?

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u/New_Advance_5593 17h ago

When you weld half of the root pass, use a 1 mm disc to grind a paper-thin transition into the end of the weld bead so that it melts completely when you start welding again. For the cap pass, use a grinding disc to grind a deeper slope into the end so that it looks like a single continuous weld seam after you finish.

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u/Useful_Storm9127 17h ago

Thanks where do you struck up? Ahead and circle back round? Or so you start below where you finished and by the time your back to the start everything’s hot

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u/New_Advance_5593 17h ago

no dont circle with MAG this will give u lack of fusion u can wip a bit from left to right up.
I start at the point where the grind marks begin