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How Do I Make a Sun Print?

Dark construction paper can be used to make a simple sun print.
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  • Written By: Henry Gaudet
  • Edited By: A. Joseph
  • Last Modified Date: 22 December 2014
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A sun print is an image created by placing an object on a photosensitive surface, usually paper or fabric, which is then exposed to sunlight. While the color and contrast of the print will vary depending on the surface used and the exposure time, an image of the object will appear on the surface. The most common form of sun print is the cyanotype, a print made on a chemically treated surface resulting in a distinctive white image on a blue background. Sun printing is simple enough for small children to participate in while still allowing enough creativity to entertain older children and even adults.

Cyanotypes are a type of sun print created on paper or fabric treated with potassium ferricyanide and a ferric salt, which must be protected from sunlight prior to use. Objects to be printed are placed on the printing surface as desired, then pinned or placed under safety glass that must not block ultraviolet light. Intricate, flat objects such as leaves and feathers work especially well. The print is then exposed to sunlight, from 10 minutes on a bright, sunny day up to 30 minutes if overcast, turning the exposed surface blue while leaving the hidden portions white. Next, the surface must be rinsed in water until the water runs clear, taking care not to expose the print to direct sunlight until it has dried fully on a flat surface.

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For a simpler version of a sun print, dark construction paper can be used. As with the cyanotype, an object is placed on the paper, which is then set out in the sun. Exposure to sunlight will cause the paper to fade, resulting in a dark silhouette of the object. While this is a very simple and inexpensive method, one that is easy enough for preschoolers to make, it does require patience, and up to six hours of exposure to direct sunlight might be required for this method of sun printing. It should be noted that there is no way to permanently set this type of sun print, and construction paper will continue to fade when left in the sun.

The cyanotype process was discovered in 1842 by Sir John Herschel, an English mathematician, chemist and astronomer who contributed to the early advances of photography. This process which would later be adapted for making blueprints. Herschel's friend Anna Atkins, a pioneer in photography and perhaps the first woman photographer, published cyanotype images in Photographs of British Algae: Cyanotype Impressions, making her book the first to use photographic illustrations.

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anon355330
Post 4

I need to know what chemical is on sunprint paper -- the chemical that makes the paper have a permanent print.

nextcorrea
Post 3

I saw an art show recently of sun prints and I was stunned by the level of design and detail. It must have taken this guy hundreds of hours to plan and then execute these very intricate and careful prints. They took up most of an entire wall and it looked like each mark had been made by hand with a tiny pen. I was amazed by the whole show.

chivebasil
Post 2

You can buy sun print kits that include all the supplies and instructions that you need. It really makes the process easy. I found one at an arts and crafts store but I have seen them for sale in big chains as well. It makes for a great art project to do with kids.

Ivan83
Post 1

I used to make sun prints all the time with my mom when I was out of school in the summer. She was a very crafty person and an amateur artists and she incorporated a lot of sun prints into her work.

I can remember afternoons when the whole drive way would be filled with them. All shapes and sizes. I would always make a few for myself. Funny, I spent so much time doing it as a kid but I don't think I have done it since then.

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