Miller multimatic 235 arc instability

Ryan Banks · 2025-07-20T08:29:00-04:00

i’m annoyed cause my Miller Multimatic 235 arc is unstable on tig with 3/32-inch tig electrode and 15 CFH argon, welds look bad. Can you give me a solution to this?

This topic has 3 replies, 4 voices, and was last updated 4 months, 3 weeks ago by Gregory Hunt.

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- July 20, 2025 at 8:29 am #69447
  Participant
  Ryan Banks
  i’m annoyed cause my Miller Multimatic 235 arc is unstable on tig with 3/32-inch tig electrode and 15 CFH argon, welds look bad. Can you give me a solution to this?
- July 20, 2025 at 2:00 pm #69449
  Moderator
  Aaron Austin
  Use 2% ceriated tungsten on your Miller Multimatic 235, set to 140 amps, stabilizes arc.
- July 20, 2025 at 7:40 pm #69450
  Participant
  Anna Brown
  Check gas flow on your Miller Multimatic 235, use 20 CFH argon, improves arc stability.
- July 21, 2025 at 1:50 am #69451
  Participant
  Gregory Hunt
  Clean metal with alchohol before welding, contamination causes arc instability, use 20 CFH argon on your Miller.
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