Troubleshooting
Why is my flux-core welding wormtracks?
Quick answer
Wormtracks (flux-core) in flux-core welding usually means moisture in the wire or slag trapped by too-slow cooling. For this process, raise voltage slightly, keep drag consistent before touching anything else.
The specific fix
Raise voltage slightly, keep drag consistent. The general rule: store wire dry, raise voltage slightly, keep the drag angle consistent.
Process checklist
- Wrong polarity — most gasless wire wants DCEN (electrode negative); check the packet
- Dragging the gun like stick — gasless likes a slight drag angle, unlike gas MIG
- Leaving slag-capped wormholes by welding too slow or too hot