The first roll came out blank. I'd followed advice on a forum on how to make washing soda out of baking soda. Which when I tried it fell through and didn't work at all. I subsequently had to order washing soda on the web.
The second came out very dark and with weak grain. Here is a picture.
The third was a 120 format colour Portra 160 ASA and came out really well as a b&w film.
The third roll was an Ilford FP4 (?) 125 ASA and was not even close to the Portra's rendering. Grainy and dark. It was underexposed by half a step, though. But that doesn't explain the extent of grain. My girlfriend will be a huge help in editing those...
Today's process went as follows:
The two first 35 mm films (one Fomapan 400 and one long since expired and exposed FLT colour 100 ASA film) came out very dark - again. But again there are exposures visible. They are still hanging to dry as I write this.
Since they came out dark I did some research and came upon one possible solution - I fixed them too short a time or with too weak a fixer. When films have been exposed to camera leaks the whole width of the film is dark - the sprockets as well. So my solution was to add another minute fixing time - now 6 minutes with Ilford Fast Fixer. And I added another 1/20th to the solution too.
Films 7-10 look more like they should - darker than lab souped films, but more transparent than my first (second and third) 35 mm disasters.
I'll keep posting more on the Caffenol adventures...