What condition would most likely cause birdnesting or arc hunting?

What condition would most likely cause birdnesting or arc hunting?

• A. A dirty line or sharp bends in the whip
• B. Excellent wire alignment
• C. Very short stickout
• D. Overheating of the drive rolls

Answer: (A)

Birdnesting and arc hunting happen when the wire feed path isn’t smooth. A dirty line or whip with sharp bends creates extra resistance and can kink or snag the wire as it feeds. That irregular feeding can cause the wire to buckle and nest inside the liner, and when the wire feed stalls or jerks, the arc can wander to find a new path—arc hunting. Keeping the welding lead clean and straight helps the wire feed consistently and maintains a stable arc. While other conditions like perfect wire alignment or very short stickout reduce problems, the most likely trigger for birdnesting and arc hunting is a dirty line with sharp bends in the whip. Overheating drive rolls can cause feed issues too, but the direct, common cause in this scenario is the dirty line or sharp bends.

Birdnesting and arc hunting happen when the wire feed path isn’t smooth. A dirty line or whip with sharp bends creates extra resistance and can kink or snag the wire as it feeds. That irregular feeding can cause the wire to buckle and nest inside the liner, and when the wire feed stalls or jerks, the arc can wander to find a new path—arc hunting. Keeping the welding lead clean and straight helps the wire feed consistently and maintains a stable arc. While other conditions like perfect wire alignment or very short stickout reduce problems, the most likely trigger for birdnesting and arc hunting is a dirty line with sharp bends in the whip. Overheating drive rolls can cause feed issues too, but the direct, common cause in this scenario is the dirty line or sharp bends.