Good gelatin in a variety of Bloom Index values are available from Rousselot in France.
Thank you for you advice PE, I'll get a contact with them.
I did two carbon prints, with a lot of problem, (spot of carbon, gelatin hole) but I saw a big potenzially of this process.
When I have a new scanner, I'll post my carbon print here.
I tried to do a double transfer, but I followed sandy king's book, but when I developed my tissue in water at temperature 40° celsius, the image didn't transfer from tissue to polyvinilic. I'm able to see the image on the carbon tissue.
What's the problem? Not good gelatin( I used a food gelatin), old tissue, or other problems that I haven't recognized.
Best
Stefano