AG Mechanics CDE Practice Exam 2025 - Free AG Mechanics Practice Questions and Study Guide

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A small weld to hold base metals together temporarily is called a/an:

arc

puddle

slag

tack weld

A tack weld is a temporary weld that is used to hold two pieces of metal together until a permanent weld can be made. Option A, "arc," is a type of welding process, not a specific type of weld. Option B, "puddle," refers to the pool of molten metal that forms during welding, not the actual weld itself. Option C, "slag," is the residue left behind after welding and is not used to hold metal pieces together. Therefore, the best option is D, tack weld.

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