The new Power Wave® 455/STT® is an inverter-based welding system that uses the company’s advanced Waveform Control Technology™, and dual power sources, to provide control of the electrode current during the entire welding cycle. The system’s simple design with few setting adjustments is easy to use for both experienced and inexperienced operators, the manufacturer says. It may be used up to 450 A, 38 V, 100% duty cycle. It has multi-process capabilities for stick, arc gouging, subarc, and wire. Lincoln Electric Co., 22801 St. Clair Ave., Cleveland, OH 44117-1199; 888-355-3213; (Web site).