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Am I the only one who finally gave in on using a backing gas for thin tube welds?
I used to think backing gas was just extra hassle for small tube jobs. It felt like slowing down for no real gain, especially on thin stuff where I could just weld fast. But last month, I had a run of tubes that kept burning through, no matter how careful I was. My partner kept pushing me to set up the argon, and I finally caved after ruining another piece. The difference was night and day - clean beads, no holes, and it passed the x-ray first try. It clicked that rushing cost me more time fixing mistakes. Now, I always roll out the gas for thin work, even if it adds a few minutes. It’s a small shift, but my rework rate has dropped, and that’s a win in my book.
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ruby6527mo ago
Funny how cutting corners bites you later, right? @william_bell35 nailed it about redoing work, reminds me of when I tried to skip purge on some stainless fittings. That extra five minutes would've saved me half a day of grinding.
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william_bell357mo ago
You said tubes kept burning through. Hold up, you weren't using backing gas? That's asking for trouble on thin material. The gas stops the weld from getting dirty and burning out. Skipping it just makes you redo work, like you found out.
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troyc177mo ago
Yeah, that part about skipping steps just making you redo the work hits home. I see it everywhere, like when people rush a home repair without prepping the surface, then the paint peels in a month. Or skipping an oil change to save time, then your car needs a bigger fix. It's always a false saving.
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derekn186mo ago
Totally feel that! It's like the universe always makes you pay back that borrowed time with interest.
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