Homebrew PCBs

Naveed Alam wrote:
> I have a solution of FeCl2 for etching copper boards.
> I keep it in a plastic bottle having a tight cap.
> Is there any problem with it. Is there any possibility
> that the solution may lose its etching power with
> time.
> Should I dry it to get the powder?
> 

Don't worry, you'll be able to pass it down to your grandchildren.