Review on 💧 Waterproof Professional Electrical Connectors by Vonnect Connectors: Ensuring Optimal Connectivity by Francisco Holmes

I carefully and slowly heated more and more and tried to melt the solder. But when it finally melted, the surrounding plastic had melted and flowed down. Conceptually this is a pretty good idea - instead of soldering and then shrinking it's one step. But for it to work, the solder has to slow down before the plastic breaks.