I now have a pre-heater and hot air, and if there are connectors on the pcb I can use low melt solder (4.50 euros for 17cm wire) or heat the pcb from the bottom, which may result in burn marks.

We put the SolderStick waterproof solder wire connectors to the test on an RC plane build! See how these heat-shrink connectors perform under real conditions and why they’re a go-to for secure ...