On 2/28/2011 9:05 AM, Randy S. wrote:
As to disposal, bubbling air through it, or adding a bit of HCl seem to
rejuvenate it - no need to dispose of it. Do a Google on copper
chloride etch - e.g.:
http://www.instructables.com/id/Stop-using-Ferric-Chloride-etchant!--A-better-etc/
Norm
W6NIM
[Non-text portions of this message have been removed]
>Beauty shop/professional hairdresser suppliers carry it.
>
> Where do I purchase 30% H2O2 ?
> I
>
As to disposal, bubbling air through it, or adding a bit of HCl seem to
rejuvenate it - no need to dispose of it. Do a Google on copper
chloride etch - e.g.:
http://www.instructables.com/id/Stop-using-Ferric-Chloride-etchant!--A-better-etc/
Norm
W6NIM
[Non-text portions of this message have been removed]