Chemical tinning of PCB´s

[harry]

I have found that electroless tinning is a short term solution... it eventually
makes the PCB even MORE impossible to solder... and it is much harder than
copper so cleaning with Scotchbrite works poorly. I had to scrape with an X-acto
knife !!!

I'd solder coat myself...

H^) harry

Michael Buchstaller wrote:

> Some short query:
>
> I have noticed that on some PCB´s that i made in the early 80s there
> is some corrosion on the traces. The boards continue to work fine, but
> i think that i shold try to stop this for future projects.
>
> Now i have heard of a way to tin-plate a board by putting it into a chemical
> solution for a while - this is told to make it easier to solder (have never had problems
> with soldering my boards) and resistant against aggressive atmospheric con-
> ditions (maybe normal city air ?)
> Here in germany, Conrad sells something that is called "SENO Glanzzinn", a powder
> that is dissolved in hot water. The board is soaked in that solution and becomes
> shiny silver after s short time (some minutes).
>
> Has anybody tried this or another method ? Is it worth the extra time and money,
> or do the tinned traces become dull very soon ?
>
> -Michael Buchstaller