Homebrew PCBs

The etchant will only keep as long as it is regenerated (usually with
oxygen from H2O2 or air).

Especially with 3% H2O2 it is said to be hard/impossible to regenerate
this etchant as it adds too much water in the long run.

ST



On Sun, Apr 26, 2009 at 8:01 PM, Alessio Sangalli <alesan@...> wrote:

>>  But usually I only prepare 1/4 L (250 mL) enough for small boards
>> everytime, as the solution cannot be kept and as it deteriorates
>> rapidly it is best to throw it away.
>
> Why do you say this. We discussed long that this solution is virtually
> eternal...
>
> bye
> as