Cyanotype prints are beautiful blue experiments with light and shadow. Paper is covered with a light sensitive mix and left to dry in the dark. The mix tints the paper yellow, this is the side which gets exposed to the light. Anything which blocks or reduces the light reaching the paper can be used as subject matter, once in place the paper can be exposed to UV light, this process works under glass left in strong sunlight over a number of hours.
I had access to an exposure unit which rapidly sped up the process!
I use black and white photo negatives printed onto acetate, hand drawn marks, tissue paper, found fabrics or papers to make my prints.
After exposing the paper to light, the chemicals get mixed out in a shallow bath of cold water and the print begins to appear in front of your eyes!