
What Is an MMA Welding Machine?
An MMA welding machine runs stick electrodes on DC current. Learn how it works, what it welds, its duty cycle, and which three stick welders suit home shops.
Side-by-side picks for MIG, multi-process, stick and TIG welders and plasma cutters. Start with the kind of welding you want to do, or the machine you're weighing.

An MMA welding machine runs stick electrodes on DC current. Learn how it works, what it welds, its duty cycle, and which three stick welders suit home shops.

Does a stick welder use gas? No, stick welding needs no shielding gas. Learn how the flux coating protects the weld and when you'd still want a gas setup.

What is a MIG welder good for? It's best for joining thin to medium steel and aluminum quickly, from auto body panels to furniture and gate repairs.

Yes, a TIG welder is an arc welder. See how TIG and stick differ, what each one needs at home, and which arc process suits your project.

Yes, a MIG welder can weld stainless steel with the right wire and gas. Learn which wire, which gas, and how to set up a home MIG welder for it.

Yes, you can weld aluminum with a TIG welder, and AC TIG is the usual home-shop method. See the settings, setup and gear that make it work.

Can you weld copper with a MIG welder? Yes, with the right wire, gas and prep. Here is how copper behaves, what you need, and where it gets hard.

Can you weld aluminium with a stick welder? Yes, in theory, but the oxide layer, arc stability and electrode choice make TIG or MIG the better path for most home jobs.

Can a Lincoln 140 mig welder weld aluminum? Yes, with aluminum wire and the right setup. See what the Easy MIG 140 handles and what to add.