[sdiy] Solder won't stick to old PCB

[Ingo Debus]

Am 28.09.2009 um 02:03 schrieb Todd Sines:

> This is exactly the case with ROHS / lead-free solder. I thought it  
> was the Weller iron upgrade, but the new lead-free solder took ages  
> to get hot enough to make a good solder joint. The older lead based  
> solder definitely melts much faster / easier.

Which sort of lead-free solder were you using? With the one I'm using  
(Sn95,5Ag3,8Cu0,7) I don't experience problems like that at all.


> Not sure how "safe" this is but I use a metal file to "clean" the  
> soldering tip;

This could be the cause of your problems: you have just ruined your  
soldering tip.

Ingo