type of welding

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Hello all, was recently watching a episode of a car restoration project and the mechanic was welding two pieces of sheet metal together where one piece had holes in it that he was depositing his weld in. what's the purpose of this, and what is it called. thanks
Reply:Plug welding generally.It's for putting two panels together - mimicking the electric spot welding process that the manufacturer originally used.Dave J.Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~ Syncro 350Invertec v250-sThermal Arc 161 and 300MM210DialarcTried being normal once, didn't take....I think it was a Tuesday.
Reply:thanks, that's the quickest reply that I ever received!
Reply:What Dave said. Did this recently when installing new rockers on a jeep cherokee. Mig /023 wire works nice on these. Miller 211Hypertherm PM 451961 Lincoln Idealarc 250HTP 221  True Wisdom only comes from Pain.
Reply:Originally Posted by bikercatHello all, was recently watching a episode of a car restoration project and the mechanic was welding two pieces of sheet metal together where one piece had holes in it that he was depositing his weld in. what's the purpose of this, and what is it called. thanks