... 2.no heat, no electricity 3.welding just one minute SZ-2S Hand Clamp Cold welding machine Introduction: 1.No need of ... our machine. Main Parameters1. Application: Widely used in the cold welding for the wire of copper, aluminum, gold, silver, nickel, ... resistance, clean, light, thin deposit, easy of operation, portability, aloft working is available 5. Overall dimensions: 215mm* 75mm * 75mm (L*W ...