What settings for 3 mm steel on Flux-core?

Question

Accepted Answer

For 3 mm mild steel on Flux-core: 110–150 A on 0.9 mm gasless wire — set per the wire packet, and expect to drag with a short stick-out. Settings table by thickness. Dialling it in. Start at the middle of the band on scrap of the same thickness. Listen: a consistent bacon-crackle means the voltage/wire-speed pair is right; hissing spatter means mismatched. Watch the wetting at the toes — a bead sitting proud on top is too cold; one digging in and undercutting is too hot.

Thickness	Wire	Current
1.5–2 mm	0.9 mm	60–110 A
3 mm	0.9 mm	110–150 A
6 mm+	1.2 mm	160–230 A

Settings table by thickness

Dialling it in

Related questions