1.5" Dimple Die

thingiverse

This tool is designed specifically for use with a press, and it comes equipped with a convenient hole that allows you to secure it in place using a 1/2-inch bolt. The nut-and-bolt method proves to be highly effective when working with aluminum materials up to .030 inches thick. In fact, extensive testing has demonstrated that this approach can handle even thicker aluminum, up to .125 inches, without causing any significant wear on the press itself.