copper patina on trellis
#1

Does anyone know of a chemical that could be used to create patina on copper? I've made a garden trellis from copper pipe, and would like to create a patina finish before installing it. Thanks!
#4

If you want the green aged look, you can buy a product from a stained glass supplier called sal amoniac block, dissolve a little of this in water, apply with a small brush and wa-la aged green copper patina. To my knowledge there isn't an authentic green patina prep that comes in a bottle.( I could be wrong). If anyone knows of a specific product, I too would be interested in knowing the name of it.