[Shop-talk] Want to corrode copper fast.

[Jimmie Mayfield]

On Thu, May 22, 2014 at 06:28:03PM -0500, Philip Ethier wrote:
> My wife has some copper tubing she wants to age to green and do it fast.
>  needs to have that green look for a project.  Is there a specific acid to
> use?  I assume that I should sand it first.

Try mixing miracle grow and hot water and applying with a spray bottle.  It'll 
turn green overnight (you might need to scuff the copper with fine sandpaper
first).

You can achieve a bluish patina using ammonia and salt.