Hobart 190 leaves porous welds

Richard Myers · 2025-07-25T20:11:00-04:00

i’m a little bit confused cause my Hobart 190 leaves porous welds on aluminum with 0.035-inch mig wire at 20 CFH argon, welds look bad. How i can avoid this problem?

This topic has 2 replies, 3 voices, and was last updated 4 months, 3 weeks ago by William Daniels.

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- July 25, 2025 at 8:11 pm #69472
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  Richard Myers
  i’m a little bit confused cause my Hobart 190 leaves porous welds on aluminum with 0.035-inch mig wire at 20 CFH argon, welds look bad. How i can avoid this problem?
- July 26, 2025 at 1:30 am #69474
  Moderator
  Chad King
  Check for gas leaks on your Hobart 190, use 25 CFH argon, fixes porosity.
- July 26, 2025 at 7:13 am #69475
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  William Daniels
  Clean aluminum with alchohol before welding, dirty metal causes porosity, use fresh mig wire.
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