On which side of the rivet should the bucking bar generally be placed?

The correct answer is that the placement of the bucking bar generally depends on rivet hardness and accessibility. This approach takes into consideration the material properties of the rivet and the configuration of the workpiece.

When the rivet is driven, the bucking bar serves as a counterforce to the impact of the rivet gun. The right placement is critical; if the rivet has high hardness or is being used in a difficult-to-access area, the operator must adjust the position of the bucking bar to ensure adequate forming of the rivet and to maintain control of the riveting process.

For instance, in some scenarios, placing the bucking bar on the side where accessing the rivet is easier may not yield the best results if the material hardness requires it to be on the opposite side for better control. Therefore, understanding the specific requirements based on the type of rivet and the surrounding materials, as well as the structural integrity of the assembly, determines the most effective placement.

This approach showcases the importance of adaptability during the riveting process, necessitating an understanding of both the materials being worked on and the techniques involved.