1966 Ford Mustang Hardtop Restoration Punching Holes For Spot Welding
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26 Unlike MIG welding, spot welding is when two metal points push against each side of a panel and pass current through them until the metal melts together. MIG welding must use a hole or edge to allow the two panels to be touched by the wire being fed from the welder. Thus the panel to be installed must have holes drilled or punched into them, as you see in many of our body articles that use a MIG welder. View Related Article
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