[sdiy] Etching PCBs with non-toxic chemicals

[Paul Perry]

You can add excess scrap aluminium to give non-toxic aluminium chloride
and metallic copper. if my memory of chem classes 50 years ago is right..

paul perry Melbourne Australia

----- Original Message ----- 
From: "Csaba Zvekan"

> Thanks Adam  and thanks David,
>
> This is highly interesting stuff as I live quiet in a remote place and 
> don't have access to the usual chemicals . How ever my question would be 
> rather the reversal of the chemical . Meaning is there a easy 
> neutralization method where I could safely put it back into the 
> environment (disposal) . Perhaps thin it down and somehow separate the 
> copper , natrium and the vinegar acid so I can feed to my plants as 
> fertilizer ? Or is that process to complex ?
>