My last post seems to be a bit foggy, I had too high temperature due to swine flu . You were right that it's quite unpredictable with these pig-related things instead of cows.... But now I'm eating these to get proper Dmax: http://www.vitabalans.fi/en2.php?k=4165
I believe that PET will be with us for a long time now on as a rollware for many, many purposes... I've two rolls of thin 40x30 cm sheets. I'll try the corona discharge subbing as soon as possible and will report the results.
And, 135 films with 12 or even 16 exposures could be hand-coated. They are still quite practical...
And I have been thinking..... There's cotton and acetic acid available in grocery stores.... Hmmmmm!