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Filing or grinding a weld bead:
Improves its appearance
Increases its conductivity
Reduces the strength of the joint
Makes it waterproof
The correct answer is: Reduces the strength of the joint
Filing or grinding a weld bead can reduce the strength of the joint. This is because the process of filing or grinding removes material from the weld bead, potentially compromising the integrity of the joint. It is important to maintain the original weld material to ensure the structural strength of the joint. Therefore, reducing the material through filing or grinding can weaken the weld joint.