Thanks very much for the comments, much appreciated
Yeah heat will destroy the magnetism, even a seconds contact with the iron will affect it so you have to be fast, Neo fast… :laughing:
Not the first time I’ve had to replace a soldered Neodymium magnet because I applied too much heat, plus the damn things will jump onto & stick to your iron tip until they kill themselves and fall off :person_facepalming:
I solder as fast as I can, wetting the surrounding area first and dragging the solder to the magnet. It helps to have the magnet stuck to something else too, to wick away heat, like a piece of thin copper sheet then more magnets on top.
I think type N lose part of their magnetisation permanently at a temperature of around 60-80°C, though there are different types and a lower melting point solder would help too as mentioned but I only use silver solder with added cadmium
Sometimes, I wonder myself