Oxen Study II (Cupric Nitrate Patina) 2022 by Conrad Hicks STIRpad

Equal amounts of cupric nitrate and ammonium chloride turn Dutch metal to a green, chalky-bronze patina. Examples of patination. Copper-leaf panel (left) was treated with sodium sulfide; silver panel (center) was treated with potash sulfurated; Dutch metal leaf (right) was treated with ammonium chloride and cupric nitrate.

Oxen Study III (Cupric Nitrate Patina) 2022 by Conrad Hicks STIRpad

Cupric Nitrate is commonly used over the top of a base patina such as Traditional Liver of Sulfur or Ferric Nitrate Patinas to add more depth and contrast to the finish. Powder Blue is a cold patina for bronze, brass, copper, and the Metal Coatings. This patina results in a stable opaque finish close to a bright ocean blue.

Traditional Cupric Nitrate Patina The Compleat Sculptor

Cupric nitrate brush application pattern. The balance of this paper will deal with the application of cupric nitrate patinas. This general-purpose patina may be applied hot or cold and may be built up to cover surfaces evenly with excellent adhesion. The solution is most easily applied to brass but holds better on copper.

Oxen Study I (Cupric Nitrate Patina) 2022 by Conrad Hicks STIRpad

Hot Patina on Bronze: Here are some basics on applying a hot patina to a bronze sculpture. For this piece, three different chemicals were used: bismuth nitrate, ferric nitrate, and cupric nitrate. All of these chemicals are hazardous and care should be taken when handl…

Oxen Study I (Cupric Nitrate Patina) 2022 by Conrad Hicks STIRpad

Part 1: 125g Cupric Nitrate 85g Cobalt Nitrate 4 litres water Part 2: 250g Cupric Nitrate 4 litres water · SAFETY · Suppliers · Recipe Source. Many sculptors spray most or all of their torch-technique patinas, but this is the only one we normally spray instead of brushing, because of the particular effects and patterns possible with spray in.

Oxen Study III (Cupric Nitrate Patina) 2022 by Conrad Hicks STIRpad

These spectra are quite similar; this is probably due to the employment of copper nitrate for the production of these patinas . In particular, the main characteristic peaks of copper nitrate hydrated (Cu 2 (NO 3)(OH) 3) can be observed at 3541 cm −1, 3420 cm −1, 1420 cm −1, 1340 cm −1, 1046 cm −1, 880 cm −1, 665 cm −1, and 507 cm.

Oxen Study III (Cupric Nitrate Patina) 2022 by Conrad Hicks STIRpad

Patina A was achieved mainly using copper (II) nitrate to give blue-green shades over a dark background made with recipe B. The Raman spectra collected in different points regularly showed bands.

Oxen Study II (Cupric Nitrate Patina) 2022 by Conrad Hicks STIRpad

Ron Young describes the application of Sculpt Nouveau's Traditional Cupric Nitrate Patina on bronze cold cast resin.

Oxen Study I (Cupric Nitrate Patina) 2022 by Conrad Hicks STIRpad

Artificial patination is mostly based on empirical recipes for which the result is difficult to forecast. Little is known about the final corrosion compound formed on the patinated object. Therefore, different patinas based on copper nitrate—an ingredient recurrent in numerous references—were realized according to traditional recipes.

Oxen Study II (Cupric Nitrate Patina) 2022 by Conrad Hicks STIRpad

Hot patinas are generally easier to control and apply to large, smooth, vertical surfaces than cold patinas, Baxter says, although the process is not trivial.. And cupric nitrate from a.

Oxen Study I (Cupric Nitrate Patina) 2022 by Conrad Hicks STIRpad

Transparent patinas are: • Cupric Nitrate • Ferric Nitrate • Potassium Dichromate • Sodium Thiosulphate. Cold Patinas. There are varieties of methods of applying cold patinas. What they have in common are that the chemicals are applied cold to the surface of the metal. The most common are:

Oxen Study II (Cupric Nitrate Patina) 2022 by Conrad Hicks STIRpad

Over a copper nitrate, hotprocess patina (#16) apply a coat of saturated potassium ferrocyanide to the heated bronze. A preservative optional. 11. Despiau Black (De Marco) A. Acquire a light green base with a hot process, copper nitrate solution. (#16 ) B. Then apply a light coat of brown with a ferric nitrate patina solution.

Traditional Cupric Nitrate Patina The Compleat Sculptor

Ferric Nitrate/Ferric Chloride Patina produces a transparent red brown finish when applied hot to bronze, brass, and copper. Similar to Ferric Nitrate Patina, the final color and opacity is determined by the application process. Additional coats will turn darker brown and more opaque. Ferric Nitrate/Ferric Chloride Patina does not need to be.

Traditional Cupric Nitrate Patina The Compleat Sculptor

Size: *. $16.99. Information. Reviews (0) Availability: Out of stock. Cupric Nitrate is a classic hot patina for bronze, brass, and copper resulting in a blue green finish. If used on iron or steel, rust will occur. Cupric Nitrate is commonly used over the top of a base patina such as Traditional Liver of Sulfur or Ferric Nitrate Patinas to add.

Oxen Study III (Cupric Nitrate Patina) 2022 by Conrad Hicks STIRpad

Process. Hot process. Solution hot (180 to 190°F), metal hot (200°F), cold wash water applied after metal has cooled to around 100°F. Wash solution over metal surface, let dry, then wash piece in cool water. Repeat until color develops. For Yellow Green, dip in dilute nitric acid, then wash and dry. Back to Index.