A protective green pigment is formed on metals like bronze, brass or copper over time. This verdigris patina that forms after years of weathering is very different from the original gleaming copper color. Such a patina can be created today by using products that speed up the natural process. A wide range of such products are available from many local and online stores.
Burying is one of the oldest methods of creating patinas and some people still use variations of this method today. A technique used in the Middle Ages to speed up the oxidization process was to bury copper strips fastened to a wooden block in some dung for a few weeks. Objects buried in containers filled with an absorbent material like sawdust or kitty litter dampened with chemicals, can result in rich colors and textures.
Another method used in the past was to heat vinegar in pots over which copper plates had been suspended. Distilled wine in clay pots was also used to create this desirable green crust on copper plates. In Ancient Greece this green pigment was used by artists until more stable pigments were developed.
Achieving this beautiful effect is not difficult today with the many products on offer. These products are used to create a chemical reaction resulting in the forming of a unique finish without having to wait for years for it to develop. Results of this process can vary considerably, depending upon such factors as the metal used, what chemical is applied and how many layers are added. A blue-green and a blue-black are just two of the colors that can be achieved.
Application must be done with care as is always the case when working with chemicals. Experimentation is usually part of the process and it is often exciting to see what results can be produced. As the process has so many variables, the end product is quite unique and this is why it is so appealing.
Some products are applied to the metal at room temperature. These products are usually opaque and are either sprayed on or painted on with a brush. It is best to pour a small amount into a disposable container for application, pouring in more as required. Applying too much can spoil the effect, creating chalky areas that flake off.
Products that need heat for application are often transparent. As heat is used the metal pores are opened, allowing the chemical to bond more tightly to the surface. More care needs to be taken, however, when working with hot metal and flammable chemicals. Gloves should be used as well as protective glasses. Ventilation is important when using any chemicals as fumes may be toxic.
This type of finish has become increasingly popular with homeowners as well as landscapers and designers. Statues, pots, doors, screens and many more items can be transformed, infusing interesting color and a touch of aged beauty into designs. They add the allure of something old and worn that has a history or tells a story.
Burying is one of the oldest methods of creating patinas and some people still use variations of this method today. A technique used in the Middle Ages to speed up the oxidization process was to bury copper strips fastened to a wooden block in some dung for a few weeks. Objects buried in containers filled with an absorbent material like sawdust or kitty litter dampened with chemicals, can result in rich colors and textures.
Another method used in the past was to heat vinegar in pots over which copper plates had been suspended. Distilled wine in clay pots was also used to create this desirable green crust on copper plates. In Ancient Greece this green pigment was used by artists until more stable pigments were developed.
Achieving this beautiful effect is not difficult today with the many products on offer. These products are used to create a chemical reaction resulting in the forming of a unique finish without having to wait for years for it to develop. Results of this process can vary considerably, depending upon such factors as the metal used, what chemical is applied and how many layers are added. A blue-green and a blue-black are just two of the colors that can be achieved.
Application must be done with care as is always the case when working with chemicals. Experimentation is usually part of the process and it is often exciting to see what results can be produced. As the process has so many variables, the end product is quite unique and this is why it is so appealing.
Some products are applied to the metal at room temperature. These products are usually opaque and are either sprayed on or painted on with a brush. It is best to pour a small amount into a disposable container for application, pouring in more as required. Applying too much can spoil the effect, creating chalky areas that flake off.
Products that need heat for application are often transparent. As heat is used the metal pores are opened, allowing the chemical to bond more tightly to the surface. More care needs to be taken, however, when working with hot metal and flammable chemicals. Gloves should be used as well as protective glasses. Ventilation is important when using any chemicals as fumes may be toxic.
This type of finish has become increasingly popular with homeowners as well as landscapers and designers. Statues, pots, doors, screens and many more items can be transformed, infusing interesting color and a touch of aged beauty into designs. They add the allure of something old and worn that has a history or tells a story.
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