Flux-core welding
Push or pull: which technique for flux-core welding?
Quick answer
Always drag gasless wire: a 5–15° drag angle keeps the slag forming behind the puddle. Pushing traps slag into the weld — the classic wormhole mistake.
Why the angle matters
Angle directs the arc force and the shield. Pushing pre-heats the path and gives a wider, flatter bead; dragging focuses heat into the metal for penetration but risks slag trapping on fluxed processes. Pick per process and stay consistent — wandering angles make wandering beads.