Non-Stick Welding, Puncture Soldering, Basic Soldering Iron Practice For Beginners 

Welding without Stick, Welding Puncture, Practice Soldering Iron Want To Know How To Solder Basic Sticks Don't Skip This Clip | Kỹ nghệ sắt linh
This is a video on how to solder a basic stick for newbies, soldering iron does not eat, does not stick, solder is punctured to know the cause and how to fix this situation.