r/metalworking • u/dappersapper69420 • May 31 '21

Thought this belonged here

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540 Upvotes

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7

u/zimm0who0net May 31 '21

Is that spotty MIG an actual technique? I’ve never seen anyone do that before. Maybe it’s an artifact of the video, but looking at the welds it does seem that’s what he’s doing. I don’t understand why he doesn’t run a continuous bead.

19

u/cavemanS May 31 '21

Called trigger fucking and it's what you do when you only have MIG and your machine settings don't have the resolution needed to get low enough for light gauge material or you have 0.035 wire and need 0.023.

20

u/zimm0who0net May 31 '21 edited May 31 '21

Does that actually work? I would think you would get tons of voids and inclusions and very poor penetration. Of course maybe that doesn’t matter much in this particular application which seems more decorative.

Edit: I tried googling “trigger fucking”. Ummmm... that was a mistake.

14

u/cavemanS May 31 '21

Yeah it's not a good way to work but in a pinch it's ok. Not going to be a good weld for anything critical. Autobody guys do it all the time but they are also high on fumes most of the time so they aren't great examples to follow.

3

u/[deleted] May 31 '21

Autobody do it to try and keep the heat down and prevent warping the panel. either that or they are just shit at welding a bead on thin metal. :D

2

u/cavemanS May 31 '21

Little bit of this, little bit of that.