This DIY Cyanotype postcard kit lets you create deep-blue prints on postcards size watercolour paper using a 19th-century photographic method. No darkroom required—just the kit and sunlight.

This kit lets you turn watercolour paper into photo-sensitive paper for making deep blue (Prussian Blue) prints. Simply apply the mix following the kit instructions, place objects such as natural materials on the paper, and expose it to sunlight to create unique blue-white images. The kit provides enough materials to treat about all the postcards in the kit as well as a bit extra for further experimenting at home on your own paper.

The Postcard set doesn't include transparent sheets for transferring photos. To experiment with photos you may wish to try the PAR Cyanotype Paper Kit instead.

Contents DIY Cyanotype kit Postcard
– Step by step instructions in Dutch, English, German and French
– 2 bottles of 20ml photo media (Part A and Part B), ready for mixing
– 12 postcards of watercolour paper 10 x 15 cm
– gloves
– foam brush
– rinsing tray
– measuring cylinder 30ml
– mixing tray
– stirring rod

After purchase (before mixing with water) it can be kept for 24 months, if you do not store it in too much light and/or heat.