Hot melt paste: It can ensure working in the environment of -20℃ to +1500℃, extending the life of the hot melt drill. Use a special copper brush for hot melt paste to apply a little hot melt paste on the working part of the hot melt drill. Stainless steel: Drill one hole and apply paste once. Ordinary carbon steel: Drill three to five holes and apply paste once. Zuofeng - the most professional hot melt drill manufacturer and technical service provider in China, focuses on providing users with the world's leading chipless extrusion hot melt forming drilling and extrusion tapping technology for thin tubes and sheets. If you have any questions about the processing and use of hot melt drills, please call us.