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One of the key advantages of using a bead roller is the ability to add rigidity to thin sheet metal without significantly increasing its weight. This is particularly important in industries such as automotive and aerospace, where weight reduction is crucial for performance and fuel efficiency. By creating beads or steps, the metal's strength is increased, reducing the likelihood of flexing or distortion under stress. This added rigidity also allows for more intricate designs and complex shapes, expanding the possibilities for custom metal fabrication.