[BrianShaw]

Does anyone who has tried it have any examples they can put up or any tips? Did you buy paving stones or did you pour your own concrete?

My example faded away, but was just cyanotype chemistry poured on xisting older concrete sidewalk, then coverred to dry. A big negative was used. A garden hose was used to "develop" the image.

The shame of it all is that I had so little interest in my experiment that I never photographed it. So all that remains is a memory.