a device and a method of using the device for construction of baffles that may be used in suppressors or solvent traps for firearms out of metal cups sold as engine block freeze plugs . the device has a bottom die , a top die and an alignment cylinder . the metal cup is transformed into a baffle by placing the metal cup on the bottom die , placing the bottom die inside the alignment cylinder , placing the top die inside the alignment cylinder , and applying compressive forces to the bottom die and top die . a hole may be drilled in the center of the baffle by placing a drill bit into a top die center hole completely penetrating through the top die and coaxial thereto , and drilling through the baffle , the drill bit passing into a bottom die center hole penetrating at least partially into the bottom die and coaxial thereto .