Appseed70, that was a great link. Thanks. Had no idea there was so many variables to tinting copper. Not sure how toxic or dangerous it is to use them. I am know thinking of getting the copper tags and using them where human (bums) eyes can see them. Longevity is also very important.
Drew, I think there is also an over the counter paste from hardware dealers that will be more user friendly, cheaper and possibly safer. I would also want a more robust wire for grafts. Our huge coastal ravens have beaks like wire cutters!!!