Best way to separate pinch welds

toolmanmike said

The trick is to drill out the spot weld and not drill through both layers.

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I use an 1/8"drill bit thru the center of the weld then use a blair cutter and only cut through the side you are NOT using and then separate with a hammer and chisel . Now the piece you saved only has 1/8" holes not 3/8" holes. That's just me. There are other ways
blair cutting tools - Bing images