Ran out of wire last weekend. No problem...had a spool of Harbor Freight MIG wire I picked up just for this contingency. Put it in, and away we go. Result was spitting, sputtering, and stuttering. Every time the wire contacted the work, the feed motor stalled and the workshop lights dimmed (even though the welder is on a dedicated circuit). Ran to Lowes and bought a spool of Lincoln wire and everything returned to normal.