[TheForge] sealing copper pee patina

[Andrew Vida]

I doubt tung oil will be as good as water borne poly.  Might be easier 
to maintain, though... not to mention far less costly.

lee robbins wrote:
> Thanks for the copper info. i wondered about the
> patina after the cat pee information on steel. I just
> got some tung oil for my tool handles and have a
> memory of someone using it on steel. Will that also
> seal the copper patina more durably than say
> polyurethane  or wax? Just letter openers.