What type of dimpling is performed using a hand squeezer?

Radius dimpling is performed using a hand squeezer because this type of dimpling is specifically designed to create a rounded contour on the skin of the aircraft, which helps in reducing stress concentrations and improves the structural integrity of the metal surface. The hand squeezer allows for precise control and application of pressure to create the desired radius without overstressing the metal.

This technique is commonly used in areas where a rounded edge is more effective for fastener attachment or where the aerodynamic properties of the aircraft's surface benefit from a smooth transition. The hand squeezer's design supports effective manipulation for achieving the curvature needed for radius dimpling, making it the preferred choice for this application.

In contrast, other types of dimpling are more suited to different methods or tools better aligned with specific shapes and profiles, such as edge or flat dimpling.