A weld bead should be two to ____ times the diameter of the electrode.

A weld bead should be two to three times the diameter of the electrode. This guideline ensures that the weld achieves sufficient strength and coverage while avoiding excessive buildup that could lead to other issues, such as inclusion or lack of fusion. When the weld bead is within this size ratio, it promotes good penetration into the base metal, creating a strong joint without excessive material that could make for a bulky weld. This balance is crucial for maintaining the integrity of the weld, as well as meeting aesthetic requirements.

Opting for larger ratios, such as four, five, or six times the diameter, may result in wastage of materials and could compromise the joint's quality due to overheating or distortion. Thus, adhering to the two to three times guideline strikes an ideal balance between strength and efficiency in welding practices.