Watch more Great Craft Ideas videos: https://www.howcast.com/videos/292650-How-to-Age-Brass
It’s possible to mimic the surface oxidation of antique brass objects by using the following techniques.
Warning
If you use chemicals to age brass, wear gloves that completely cover your hands, and safety glasses. Work in a well-ventilated room.
Step 1: Remove any varnish
Remove any varnish from the surface of the object by applying acetone with a brush. Rinse off the acetone with hot water.
Tip
If you are not sure the object is made of brass – bronze and copper look similar – take it to an expert for an evaluation. Aging treatments that work for brass may damage other materials.
Step 2: Brush vinegar or salt water on the surface
Brush vinegar or salt water over the entire surface of the object using the paintbrush. Both liquids oxidize the brass.
Step 3: Apply heat
Apply heat or a flame to the object, which causes the brass object to take on an aged appearance relatively quickly.
Warning
Brass is often coated with lacquer. Be sure that all lacquer has been removed from the object before subjecting it to flame because lacquer is flammable.
Step 4: Use a commercial aging product
Apply an over-the-counter aging product, though it may leave a color deposit on the object’s surface that wears off easily during normal use.
Step 5: Use ammonia
Place the object in a large plastic bag next to a rag soaked in ammonia. Ammonia vapor produces a greenish-brown oxide finish on brass, close in color to a natural patina.
Did You Know?
Brass is an alloy of copper and zinc.
Wednesday, September 12, 2018
Greenberg Lounge, Vanderbilt Hall
It’s all too common in criminal cases to encounter junk science masquerading as forensics. The consequences can be egregious: innocent people sent to prison while perpetrators remain free.
At this Latham & Watkins Forum, Washington Post writer Radley Balko and Mississippi law professor Tucker Carrington discussed their recently published book, The Cadaver King and the Country Dentist: A True Story of Injustice in the American South.
Balko and Carrington were joined by Bennett Capers, law professor at Brooklyn Law School, where they discussed concerns about junk science in the criminal justice system around the country. The panel was moderated by NYU School of Law professor Erin Murphy.