What does a plug or slot weld involve?

A plug or slot weld specifically involves welding two pieces together by placing a series of small welds in drilled holes (plugs) or elongated slots. This method typically consists of welding through these pre-drilled openings, which allows for a strong joint to be created by fusing the base material together. The effectiveness of this welding technique lies in the fact that it can be performed on components that are not easily accessible from both sides, making it ideal for certain applications in manufacturing and repair.

In contrast, the other options focus on different welding methods. Continuous bead welding refers to a single, uninterrupted line of molten material that joins pieces together, while creating welds on various surfaces does not capture the essence of how a plug or slot weld operates. Additionally, using filler material is characteristic of processes such as arc welding, but does not define the specific mechanics of plug or slot welding, which is focused on the interaction of the base metals via localized heating and fusing in pre-prepared openings.