The solder iron is damaged. The solder iron is damaged . Open it, remove the core . Open it, remove the core old used battery used old battery take the core of the battery take the core of the battery clean it and sharpen it clean and sharpen it use a 1.5mm wire
Use a 1.5mm wire wrap it around the battery core battery core install into the welding torch install into the welding torch install into the welding torch use a 12v- 6a battery to weld use a 12v- 6a battery to weld great results great results bye bye see you soon