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Straight answers to the questions people ask most when choosing and using portable, lightweight MIG/MAG welding machines.
A light, portable MIG machine suits mobile welders, maintenance and repair teams, farm and site work, small fabrication shops and anyone who has to carry the machine to the job. It gives proper MIG/MAG capability without the size and weight of a heavy industrial unit.It is not intended to replace a large three-phase machine for continuous heavy production. Think about the thickest material you weld and how long you weld without a break before deciding.
A dual-voltage machine is designed to run from more than one supply voltage, for example a reduced-voltage site supply or a standard single-phase supply, depending on the model. Welding output is often lower on the lower voltage, but how much varies between machines.Check the data plate and manual for the supplies the machine accepts and the output on each. Make sure the supply, any extension lead and the fuse or breaker are suitably rated, and ask a qualified electrician if you are unsure.
Pulse MIG alternates the current between a high peak and a lower background level, giving a controlled metal transfer with less heat input and less spatter. It is helpful on aluminium, stainless steel and thinner material.If you mostly weld mild steel, a standard synergic machine is often enough. Choose a pulse model if you regularly weld aluminium or stainless, or need a cleaner appearance and low distortion.
Yes, with the right set-up. Aluminium needs pure argon shielding, a suitable aluminium wire, a torch and liner set up for soft wire, and drive rolls designed for it. A short torch run, or a push-pull or spool gun style arrangement, helps because aluminium wire is soft and tangles easily.Check that your machine and its programmes support aluminium before buying. Clean the surface well, because the oxide layer causes poor welds.
