Homebrew PCBs

> How about a solution composed of NaOH and H2o2?
> You will get:
>
> Cu(OH) Blue in color
> Cu(OH)2 Black in color.
>
> If you apply heat, the Cu(OH) will be oxidized to
> Cu(OH)2.
>
>
>
> Best regards
>
> Marvin Dickens
>
> ===


Thanks, that's worth a try....

The black i produced the other day didn't stick....

ST