Tack Weld Vs Spot Weld – What's The Difference?

Although both are used for joining metals together, there is a difference between spot welding and tack welding.

Tack welding is an important process that is used to hold parts in the correct position and alignment to be welded. Spot welding, meanwhile, is one of the oldest welding processes, used to join two or more metal sheets together, usually without the use of filler materials.