Generally (but not always) pronouns stand for (pro + noun) or refer to a noun, an individual or individuals or thing or things (the pronoun's antecedent) whose identity is made clear earlier in the text. For instance, we are bewildered by writers who claim something like. They say that eating beef is bad for you.
A wire feeder may be used for machine or automatic welding and must be the constant speed type. The wire feeder must have a speed adjustment covering the range of from 10 in. per minute (254 mm per minute) to 125 in. per minute (3.18 m per minute) feed speed. PAW or plasma arc welding using an automated process.
Welding Safety. Welding is so hot, it's cool. It doesn't get better than fusing two pieces of steel with a thin ribbon of molten metal. PM has covered electric-arc welding since the 1920s, and lately we've noticed a major revival of interest in it. Helping to drive that is the wire-feed welder, a compact machine that feeds a thin wire electrode down a hollow cable to a small plastic gun. It's easy to use: Strike an arc with the wire and move the gun down the joint.