materials : brass, copper, leather, glass, steel, cotton cord,
materials : brass, copper, leather, glass, steel, cotton cord,

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A full step-by-step on a project like this would be amazing!
1. we need to : ammonia solution ( Ammonium chloride) medical solution 10%
a weak solution of hydrochloric acid (soldering acid)
jar with a cover
2. process: pour on the bottom of the jar ammonia
put the product in a jar, close the lid, put in the heat.
we see how transparent liquid becomes a bright blue, as the product grows dim and covered with oxides of nitrogen
keep the product in the jar 4-5 hours, periodically turning, and as soon as it becomes completely covered with oxides of nitrogen - pulls.
the finished product has a color - dark-green, with the transition to the blue and black
acid and cloth begin to scour the patina ( Caution - acid must be very little)
and that's all :)
bad know English, but I hope that anything would help :)