What type of materials would a welder not typically work with?

A welder primarily specializes in joining materials together through the process of welding, which involves melting and fusing metals. Consequently, the types of materials welders typically work with are predominantly metals, as welding techniques are specifically designed for their properties.

Composites, although not traditionally welded in the same manner as metals, can sometimes involve welding processes, but more often rely on adhesives or other joining techniques. Ceramics have properties that make them difficult to weld due to their brittleness and high melting points, making specialized techniques necessary. However, glass stands out as a material that is not commonly associated with welding, as the process does not lend itself to effectively joining glass pieces together without risking breaks or shattering. Therefore, while welders may occasionally work with these materials, glass is generally not encountered within the standard practices of welding, justifying the selection of this answer.