I am a copper artist, that uses propane and oxygen to paint the patterns onto the copper. I also have a line of 12 colored patina washes that are put onto the pieces after they have dried, then on my 3-M grinding wheel some of wash is removed. To give a contrast with the copper shining thru! I have another line where I use my diamond head dremel to etch patterns from around the world into a piece of jewelry. I use a product called Ever-brite to protect the piece and to had luster,on the garden stakes I apply 2 coats.