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If you're just looking to keep things simple, this one MIG technique works for all positions.
By tracing the front leading edge of the puddle, this one single MIG welding technique gets penetration in every position.
Can one Technique work for all positions?
This simple technique basically just traces the front edge of the puddle where the rubber meets the road. But Cut and Etch testing is still one of the best ways to verify your technique and settings