[sdiy] Solder won't stick to old PCB

[Graham Atkins]

If you look at the various soldering eqpt manufacturers sites about
the use of lead free solders, the melting point is typically a fair bit
hotter than for leaded solders. Ingo, your iron was probably too
hot to start with, the solder you describe will definitely have a higher
melting point than your usual 60/40 lead alloy.

Graham

On 28 Sep 2009, at 17:01, Ingo Debus wrote:

>
> 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
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