The result: welders that weigh as little as 15 pounds. For example: Lincoln Electric’s Century Inverter Arc 120 has a 70-amp max welding capacity, weighs only 17 pounds and costs $320.

“The American Welding Society recommends there be less than a five mile-an-hour wind when welding with a MIG,” says Lincoln Electric ... when arc welding. Inverter welders are a lightweight ...