Good day, I really need some experts clarification on issues I have with soldering. Still trying to master it. some times it goes flawless with metal melting so lovely (I love this moment) some times I have solder burning and getting dark but not melting I attach picture. What can be wrong there? I have hard and medium solder purchased from cooksons. I am starting with low tems and moving ard and then slowly increase. some times I have metal bright red but solder not melting at all!!!! :(|
thank you !
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