A lap seam can be spot-welded.

• A. No
• B. Yes
• C. Sometimes
• D. Not applicable

Answer: (B)

Spot welding works well for a lap seam because the overlap creates a continuous contact area between the two sheets. When the overlapped sheets are clamped and current is applied, heat is generated at the contact points and weld nuggets fuse the metals together. By placing multiple spot welds along the seam, you form a strong, continuous joint without needing a full seam weld. This method is common for thin sheet metal in automotive bodies and cabinets. Clean, properly aligned surfaces and appropriate thickness are important to avoid burn-through or weak welds. So, a lap seam can be spot-welded.