SV: SV: [sdiy] Solder won't stick to old PCB

[John Alex Hvidlykke]

Well, one of the most effective cures for tarnished silver (but probably not
as good a The Dip) is regular toothpaste. Might as well try that on my
oxidised component leads ;-)

\John

> -----Oprindelig meddelelse-----
> Fra: synth-diy-bounces at dropmix.xs4all.nl
> [mailto:synth-diy-bounces at dropmix.xs4all.nl]Pa vegne af David G. Dixon
> Sendt: 27. september 2009 22:04
> Til: 'Graham Atkins'; 'John Alex Hvidlykke'
> Cc: 'Synth DIY'
> Emne: RE: SV: [sdiy] Solder won't stick to old PCB
>
>
> They used to sell this stuff for de-tarnishing silverware the easy way,
> where you just dip the silver into this solution and it comes out
> perfectly
> shiny.  I think it might have been called "Dip-It".  I think that
> infomercial guy who just died (Billy something-or-other) was hawking
> something similar on TV recently.  I don't know what this stuff
> is, but I'm
> guessing it's some sort of reducing agent (sodium borohydride, perhaps?).
> When I was a kid, I used it on bronze coins, and it worked perfectly.  I
> think one could brush this stuff on oxidized copper traces/pads
> to the same
> effect.
>
> > Before now with badly corroded joints I've used a mildly abrasive
> > paste like
> > T Cut (For car paintwork) applied on a cotton bud, but clean well
> > afterwards.
>
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