1, the head part of the screwdriver in the gas stove red, and then quickly top on that screw, slightly wait about 5 seconds, you can wring out.
2, in order to unscrew the screws, in the screwdriver head pad something to increase the friction force, such as put some double-sided glue, non-woven fabric and so on.
3, can cool down to unscrew the screws, the melted solder hanging on the head of the welding gun, the screwdriver and screws on the good, will solder point up for processing.