WORKSHOP GUIDE: MIG WELDING
HOW TO CHOOSE A MIG SET, TUNE IT IN AND WELD PERFECT SEAMS
Ever wondered how to do it? Here’s your answer.
a near-essential skill if you’re an old car enthusiast. Whether you’re undertaking a full restoration or helping a daily driver through an MoT, the ability to carry out your own welded repairs will potentially save you a massive amount of money. It’s a skill that comes in handy in a wide range of other workshop situations, too.
We’re starting with MIG welding, which is the most common, versatile and accessible process for home restoration. Other processes are useful in certain situations, too. We’ll move on to those later. In this instalment, we’re covering the basics of setting up your MIG welder and running a simple weld on mild steel. We’ll look at different joint types and advanced techniques in forthcoming issues.
CHOOSING A WELDER
Be kind to yourself and buy a decent MIG welding set. Avoid cheap sets that have constantly live torches or that don’t have cooling fans. Make sure its minimum current is 30 amps or less. Stay away from budget ‘gasless’ sets – the ugly results will risk putting you off welding forever. Gas is conveniently available in various forms. Generally speaking, the larger the cylinder, the more cost-effective it is.