I understand, thank you.
The reason I burned the via was because I couldn’t get the old solder out and didn’t know how to do it safely. Sounds like the solution is to pre-heat the board, use leaded solder, and try a larger/different tip.
What I shouldn’t do is use low melt or just keep increasing the temperature.
This makes me feel a lot better, thank you!
My usual temperature was 370°c but since I’ve burned the via I’ve dropped it down to 340°c and only go up when I really need to. I’ll probably go back to 370°c
As for the stubborn points, I’m going to preheat and try different/larger tips before I go above 400°c.
Thanks again!