MIG welding is one of the easiest welding processes to learn - which is why it's where most people start. With the right equipment and a few basic tips, you can be laying decent welds within your first session.
What Is MIG Welding?
MIG stands for Metal Inert Gas. A wire electrode feeds continuously through the torch while an electric arc melts the wire and the base metal together. Shielding gas (or flux in the wire for gasless welding) protects the weld pool from contamination.
What Equipment Do You Need?
1. MIG Welder
For beginners, we recommend a gasless MIG welder in the 120A-145A range - no gas cylinder needed, runs off a standard 15A plug, and handles most light work up to 3mm steel.
Great starting points: Pinnacle MIGARC 145 (from R1,375) or Megatec FX-120A (from R1,425, comes with free wire).
2. Welding Wire
For gasless welding, you need flux-cored wire. Common sizes: 0.8mm (thin material), 0.9mm (most common all-purpose size), 1.0mm (thicker material).
3. Welding Helmet
Never weld without a proper helmet. The arc produces UV and infrared light that can permanently damage your eyes. We recommend an auto-darkening helmet - it darkens automatically when the arc starts.
4. Welding Gloves
Leather welding gloves protect your hands from spatter, heat and UV.
5. Welding Jacket
A leather or flame-retardant welding jacket protects your arms and torso from spatter.
6. Angle Grinder
For cleaning up welds, grinding off rust and bevelling plate before welding.
Setting Up Your MIG Welder
- Install the Wire: Fit the spool onto the hub and feed wire through the liner until it exits the contact tip by about 10mm.
- Set Wire Feed Speed and Voltage: Start with recommended settings in the manual for your material thickness.
- Set Polarity: Gasless flux-core wire requires DCEN (DC electrode negative) - check your manual and swap leads if needed.
- Set Stick-Out: Distance between contact tip and work should be 10-12mm.
Basic Welding Technique
- Clean your metal - remove rust, paint and oil
- Clamp your work securely
- Attach the earth clamp as close to the weld as possible
- Hold the torch at 10-15 degrees, pointing in the direction of travel
- Maintain consistent speed and distance
- Listen to the arc - a good MIG weld sounds like bacon frying
5 Most Common Beginner Mistakes
- Welding on dirty metal - always grind or wire-brush first
- Too much stick-out - keep the tip close to the work
- Moving too fast - slow down for better penetration on thicker material
- Wrong polarity on gasless wire - check you're set to DCEN
- Not wearing proper PPE - arc eye is extremely painful; always wear your helmet
Ready to Start?
We stock everything you need at Youngs Industrial - from beginner machines to helmets, gloves, wire and grinders. Visit our Cape Town store or shop online with nationwide delivery.
Shop Beginner MIG Welders | Shop Welding PPE
Questions? Call us on 071 247 4802 - we're happy to help.