MIG Welding Wire Size


When welding butt welds on floor pans, what size MIG wire should I use, and at what voltage setting on the welder?


When MIG welding automotive sheet metal, thin wire is better. Most often .023 solid wire is used with a 25/75 (argon/CO2) shielding gas. Some welders can not use .023 wire, so .030 wire can also be used instead but watch for burn through. The voltage setting is different on every welder and welding condition, just make certain you are getting good weld penetration without burning through.

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5 Responses to “MIG Welding Wire Size”

  1. Robert W

    Buy a Miller autoset mig welder and never worry about the settings as long as you know metal thickness. I’m a home DIY’r and It changed my my “skill level “ tremendously.

  2. Vivekanandan Devaraj

    Learning a lot

  3. Gordon Pittsenbarger

    <strong> I am building a 53 Ford F100 with 302 engine. I was planing on running straight pipe. Will the engine run better with back pressure from a muffler?

  4. Scott Steele

    <strong> I am welding floor pans etc .on my 1966 tbird and have the harbour freight ultimate 200 welder ...brand new ... cool welder ... what settings do you recommend .... and yes btw i am a paid member let me know thks i bought it to work on my project car Scott Steele

  5. CHARLIE6274

    can you weld without a gas shield and if so what size wire