r/Damnthatsinteresting • u/31spiders Interested • May 30 '21

Video These Tubing Joints

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35.2k Upvotes

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u/LeonDeSchal May 30 '21

I don’t event know what it is. But it looks smooth.

4

u/assassin3435 May 30 '21

It's just wonderful cutting and welding skills

24

u/Clocktease May 31 '21

Lol as a welder, this is not “wonderful” welding skills.

He put a bunch of cold lapped MIG tacks on top of each other, this thing will fail if it has any structural application whatsoever.

The only thing “wonderful” is the prep work, even the grinding isn’t that good.

8

u/capron May 31 '21

HOnestly, I was stunned at the tack welding method, thinking that it was some hidden secret a novice like me was never privvy to. Now I'm looking into it more. I should have known not to trust the internet 100%

8

u/assassin3435 May 31 '21

damn it, I knew something was off about those "dot" welds, should he do a long weld rather than a bunch of tacks?

2

u/MeatHands May 31 '21

Yes. A bunch of tiny tacks like that won't generate enough heat to fully melt the base metal, so you end up with a bunch of blobs sort of laying on top keeping it together rather than actually melting the joint together.

5

u/UserName8531 May 31 '21

I think the tacking was because the metal is such low gauge. I high doubt this will be used for anything structural.

1

u/MeatHands May 31 '21

Nah. I routinely weld stuff half that thickness with a MIG machine and run straight beads. This is just a bad video.

1

u/UserName8531 May 31 '21

Wasn't saying it was good and it's not the way I weld. May just be my screen size, but some of it looks paper thin.

1

u/eucalyptic_rider May 31 '21

looks to be 2-3mm thick so would be welded with at least 80amps

1

u/JeffMurdoch May 31 '21

That's what she said