What causes miller 252 welder porosity?

This topic has 2 replies, 3 voices, and was last updated 3 months, 3 weeks ago by Dennis Collins.

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- August 21, 2025 at 2:52 pm #69598
  Participant
  David Johnson
  why’s my Miller 252 welder leaving porous welds with 0.035-inch mig wire at 20 CFH argon? welds look bad, any ideas?
- August 21, 2025 at 8:08 pm #69600
  Moderator
  Blake Garcia
  Check for gas leaks on your Miller 252 welder, use 25 CFH argon, fixes porosity.
- August 22, 2025 at 3:45 am #69601
  Participant
  Dennis Collins
  Clean aluminum with alchohol before welding, dirty metal causes porosity, use fresh mig wire.
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