Most Common Causes
- Poor shielding gas coverage or gas flow disruption
- Dirty base metal, wire, tungsten, or consumables
- Damaged nozzle, diffuser, cup, o-ring, or gas path component
- Wrong process setup for material, gas, or wire type
Symptom-first troubleshooting
Porosity Troubleshooting
Find common welding porosity causes, shielding gas checks, nozzle and diffuser checks, setup issues, and related support pages.
Beginner Explanation
What this means in plain English
Porosity is small holes or bubbles in the weld. It usually means gas, contamination, or setup is letting air or dirt into the weld puddle.
Compatible Processes to Check
MIGTIGStickPlasma
Commonly Failed Consumables
Related Symptoms
Related Blog Guides
Machine and Equipment Pages to Check
10-Pin to 14-Pin Adapter Cord
Machine · Miller · TIG · MIG
Miller · TIG / MIG · Multimatic 215, Multimatic 215 PRO
Flow Gauge Regulator for Argon or Ar/CO2 Mix Machine · Miller · Smith · GAS · MIG · OXY-FUELMiller / Smith · gas / MIG · Millermatic 180 Auto-Set, Millermatic 211
Miller M-10/M-15 Gun Breakdown Machine · Miller · MIGMiller · MIG · Millermatic 180 Auto-Set
TIG Coolant Machine · Miller · TIG · MIGMiller · TIG / MIG · Multimatic 220 AC/DC
Weldcraft A-150 (WP-17) TIG Torch Machine · Miller · Weldcraft · TIG · MIGMiller / Weldcraft · TIG / MIG · Multimatic 215, Multimatic 215 PRO
XR-Pistol-Pro Push-Pull Guns Machine · Miller · MIGMiller · MIG · Millermatic 255, Millermatic 355
Gun Convenience Kit Machine · Miller · MIGMiller · MIG · Millermatic 251
Hypertherm Duramax Hyamp Full-Length Machine Torch Parts Breakdown Machine · Hypertherm · PLASMAHypertherm · Plasma
Related Support Pages
10-Pin to 14-Pin Adapter Cord
Machine · Miller · TIG · MIG
Miller · TIG / MIG · Multimatic 215, Multimatic 215 PRO
ESAB PT-121 / PT-121M Torch Parts Breakdown Gun / Torch · ESAB · STICKESAB · Stick
ESAB PT-17A / PT-17AM Torch Parts Breakdown Gun / Torch · ESAB · STICKESAB · Stick
ESAB PT-27 Torch Parts Breakdown Gun / Torch · ESAB · STICKESAB · Stick
ESAB PT-38 Torch Parts Breakdown Gun / Torch · ESAB · STICKESAB · Stick
ESAB PT-39 Torch Parts Breakdown Gun / Torch · ESAB · STICKESAB · Stick
Flow Gauge Regulator for Argon or Ar/CO2 Mix Machine · Miller · Smith · GAS · MIG · OXY-FUELMiller / Smith · gas / MIG · Millermatic 180 Auto-Set, Millermatic 211
Miller M-10/M-15 Gun Breakdown Machine · Miller · MIGMiller · MIG · Millermatic 180 Auto-Set
TIG Coolant Machine · Miller · TIG · MIGMiller · TIG / MIG · Multimatic 220 AC/DC
Weldcraft A-150 (WP-17) TIG Torch Machine · Miller · Weldcraft · TIG · MIGMiller / Weldcraft · TIG / MIG · Multimatic 215, Multimatic 215 PRO
Long-Tail Search Phrases Covered
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