What is one of the methods used toFix materials together?

Welding is a method used to fix materials together, particularly metals, by joining them through the application of heat and pressure. This process creates a strong, permanent bond as the materials melt and fuse together at the joint. Welding is particularly valued in construction and manufacturing due to its ability to provide high strength and durability in the connections it creates.

In contrast, the other options involve different processes: sanding is used for surface finishing and smoothing rather than bonding materials; laminating typically combines layers of material using adhesives but is not a direct method like welding; and painting serves as a protective and aesthetic coating but does not join materials together. Understanding these distinctions helps clarify why welding is recognized as a direct method for fixing materials.