SUB MENU> Production | Engineering Design | High Pressure Diecasting J W Singer manufactures brass pressure diecastings with a standard shot blast (wheelabrated) finish. This process cleans and brightens the surface of the casting leaving a finish that can be painted or plated without any additional operations. J W Singer do not have any in house machining or plating capabilities but we can offer sub contract machining and plating in the United Kingdom if required.