Troubleshooting
Why is my tig welding porosity?
Quick answer
Porosity in tig welding usually means gas shield interrupted — wind, empty bottle, loose fittings, or dirty/oily steel. For this process, verify pure argon and purge on stainless before touching anything else.
The specific fix
Verify pure argon and purge on stainless. The general rule: check gas first: flow, leaks, leaks at the regulator; shelter the arc; clean the joint.
Process checklist
- Dipping the tungsten into the pool — contaminating the electrode and the weld
- Too much torch angle: 10–15° from vertical is plenty
- Forgetten post-flow gas: tungsten oxidises and turns black as it cools