Q&A topic

MIG welding: 21 questions answered

• How does mig welding work?

  MIG welding (GMAW — Gas Metal Arc Welding): a continuously fed wire electrode melts into the weld pool under an argon-CO2 shield. …

• What is mig welding used for?

  MIG welding is used for beginners, speed, sheet steel, general fabrication and trailers and gates. In Australian terms: trailers, …

• How hard is mig welding to learn?

  MIG welding is the easiest process to learn. Expect same-day usable beads.…

• What gas does mig welding use?

  MIG welding uses an argon-CO2 mix (Argoshield-family) or 100% CO2.…

• What thickness can you weld with mig welding?

  A 180 A hobby MIG welds to about 6 mm properly in a single pass; 200 A+ machines handle 10 mm+ with prep and multi-pass. Under 1 m…

• Common mig welding mistakes and how to fix them

  The most common mig welding mistakes: stick-out too long; travel too slow on thin sheet, burning holes instead of building a bead;…

• Can you do mig welding outdoors?

  Only with shelter: any breeze over ~8 km/h blows the argon shield away and the weld goes porous. For real outdoor work, switch to …

• Push or pull: which technique for mig welding?

  Push (torch angled 5–15° toward travel) for better visibility and a flatter bead on thin material; pull for deeper penetration on …

• What settings for 3 mm steel on MIG?

  For 3 mm mild steel on MIG: roughly 110–150 A on 0.9 mm wire at 12–15 L/min gas — set voltage and wire speed as a pair, watching f…

• How to weld vertical-up with MIG

  Vertical-up mig welding: drop 10–20% current, point slightly upward into the pool, and use a weave or triangle pattern to let each…

• Is the VEVOR 130A Synergic MIG any good?

  At $174 observed (vevor.com.au direct), the VEVOR 130A Synergic MIG sits in the DIY / home workshop use band. The spec of record i…

• Common VEVOR 130A Synergic MIG problems (and the fixes)

  Most MIG faults trace back to four things: heat input, travel speed, consumable condition and shielding. Symptom → cause → fix for…

• VEVOR 130A Synergic MIG settings for common jobs

  Starting points scale from the 130 A rating: dial in on scrap, not on the job. Voltage and wire speed (or amps for stick) move tog…

• Does the VEVOR 130A Synergic MIG need gas — and which kind?

  argon/CO₂ mix for steel; pure argon for aluminium. Cylinder size, refill vs swap pricing and the full gas comparison live in our A…

• Is the Ozito 100A Gasless Inverter MIG Kit any good?

  At $199 observed (Bunnings), the Ozito 100A Gasless Inverter MIG Kit sits in the DIY / home workshop use band. The spec of record …

• Common Ozito 100A Gasless Inverter MIG Kit problems (and the fixes)

  Most MIG faults trace back to four things: heat input, travel speed, consumable condition and shielding. Symptom → cause → fix for…

• Ozito 100A Gasless Inverter MIG Kit settings for common jobs

  Starting points scale from the 100 A rating: dial in on scrap, not on the job. Voltage and wire speed (or amps for stick) move tog…

• Does the Ozito 100A Gasless Inverter MIG Kit need gas — and which kind?

  argon/CO₂ mix for steel; pure argon for aluminium. Cylinder size, refill vs swap pricing and the full gas comparison live in our A…

• Does MIG welding steel need 100% CO₂ gas?

  MYTH BUSTED: “MIG welding steel requires 100% carbon dioxide shielding gas.” — rated False after two-pass adversarial verification…

• Can you MIG weld aluminium on a steel setup?

  MYTH BUSTED: “Aluminium can be MIG welded on a standard steel setup without any changes.” — rated False after two-pass adversarial…

• Does wind affect MIG welding?

  VERIFIED TRUE: “Wind can blow shielding gas away from a MIG weld and cause porosity.” — rated True after two-pass adversarial veri…