Review on 🔥 Superior Performance Rosin Soldering Flux - CAIG Labs RSF R80 2 by Robert Howell

This solder does not adhere as well as lead-free solder. I've tried lead free soldering and this flux barley works with the right heat. This creates black tarnish and carbon flakes. Doesn't remove anything and forms a layer of slime where the solder won't bond to the copper because it repels it like hydrophobic materials. And I can't solder aluminum or other conductive metals. The only thing he's good at is cleaning the iron.