The patina is actually an oxide film, that is, a layer of clothes attached to the surface of the gyro. You need a special bath lotion for metal, and then you can rub the copper paste, but don't rub it in the mirror. The oxide layer on the mirror is not easy to attach and easy to fall off when playing.
Then dry it, blow dry it with a hair dryer, and then put it in a humid and ventilated room. Don't touch him for a week, and then it will gradually change from pink to purple or crimson, and sometimes it will produce colorful colors. Leave him alone and let him change himself.
After that, I will wear a glove tray to play, so that my hands sweat evenly on the top, and I won't wash off the oxide layer because I sweat too much. If the tray is well played, the color at this stage is the best, it is light orange, but don't worry. I can play with my hand tray in about a week.
At this time, the oxide layer is basically stable. Touch it every day when you have sweaty hands, and then continue to put it in a place with good air circulation to absorb the essence of heaven and earth. The reason why you play with your hands and sweat is because the process of pulping is the process of oxidation. Without the participation of sweat, copper can't be oxidized, and naturally it can't form patina. But if the hand feels astringent, it should be stopped immediately at this time, otherwise it will be wasted.