If build-up on your soldering tip is too persistent and cannot be cleaned off with a sponge or shavings, use Goot soldering tip activator. It will thoroughly clean the shank of your soldering tip from carbon deposits and restore its working properties. Please remember to preheat your soldering tip to 300 – 350℃ before starting the clean-up. Otherwise, the result will be unsatisfactory or altogether non-existent.