Thank you Liam! 
I read through the thread and I think the takeaway is that I need to use the right soldering material (where it has a non-corrosive flux)? Hopefully I interpreted it correctly.
May I ask what made you recommend this? 1mm Lead Free 250g Roll Solder Australia. Is it safer because it’s lead free?
@Robert93820 from the Featherwing thread recommended Resin Core Solder where the flux is in 5 cores in the solder. Is the lead free solder you recommended the same type?
I also got too excited and went ahead and bought this soldering iron before seeing your comment: 1mm Lead Free 250g Roll Solder Australia I like the cool spiral stand. Do you think this iron will be ok?
Thank you Liam for all your help!
