Homebrew PCBs

Put in lot more acid, make it like 100 g/L. Where are you
getting the acid ?
Solder will be ok for anode, but expect lots of black
looking sludge to form as the lead sulfate formed is
insoluble. Bagging the anode is a good idea.

I assume you will be going to use alkaline ammonia etching
as that's the only etchant compatible with tin metal resist.

Below is the URL to the web page I wrote a long time go 
describing the procedure for preparing a acid tin sulfate 
plating baths.

http://members.optusnet.com.au/~eseychell/electrolyte.html


Adam

roel_cnc wrote:
> Hi,
> 
> some testing done with sulfuric acid and normal solder wire as anode
> I uploaded a few photo's shown the huge tank and the result :))
> http://www.xs4all.nl/~atmel/fotos/album1.html
> the 1st result was get cristals on the surface after bagging the
> tin in a coffee filter makes much better result
> also the voltage as low as 2 volts helps 
> i like to use the tin as a resist for etching (in future)
> it solder real easy components on so gonna use it as anti oxidize for 
> copper (instead of a flux)
> just have to hot weld another pvc tank for it
> any sugests always welcome
> the little red tank is 5 x 5 cm :) filled with dim water and only a 
> few drips of acid 
>   
>  
> 
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