Coffee Plus X-Rays Equals Art!

I recently began photographing with an 110 year old 8x10 camera. Its a lovely heavy beast which requires rather expensive sheet film. I really enjoy using it and have been actively seeking economical ways to make this camera usable on a weekly basis.  One thing that Large Format photographers have been using instead of costly film is X-Ray film. It comes in most sizes, even more commonly 8x10. So here is a readymade orthochromatic film that can be used cheaply! The problem is there are no specifications toward using it as a photographic film. So a good bit of experimentation is required.

8x10 X-Ray Film image by Holden Richards

The main problem is developer/development time. Which developer gets the best results. I tried several with the outcome usually being that the negative was uneven or blotched in some way. After a few near-hits I stumbled across a Flickr user who was experimenting with Caffenol (an instant coffee and vitamin c based homebrew film developer) and it seemed to yield a smooth perfect negative. So now when I develop X-Ray film I'm in the darkroom mixing kitchen safe materials into film developer. The recipes for caffenol can be found at caffenol.blogspot.com.