Designed for maximum portability when arc stud welding, the new PowCon Arc Stud 625 stud welder by Miller Electric Mfg. Co., Appleton, Wis., features inverter arc control technology for superior arc stud performance and lightweight portability. Other arc stud welders can weigh hundreds of pounds; the Arc Stud 625 weighs only 75 lb, enabling manual portability on the work site. The Arc Stud 625 has an output range of 500 to 1,000 amps and a rated output of 1,000 amps/32 volts at a 7%/4 studs per minute duty cycle. Stud diameters range from 1/8 in. to 5/8 in. and welding a 5/8-in. stud requires only 950 amps and takes 3/4 seconds.