i have never experienced uneven development from stand development -- using caffenol, caffenol C or caffenol 130.
i use cylinders for roll film ( hand tanks ) as well as daylight tanks for sheet film ...
i hate using daylight tanks they are a pain to load, but i like the results so i shouldn't complain.
i have used coffee with agitation ( small tanks ) trays, and in a rotary processor over the years
and still do that on occasion, but just the same, i don't mind leaving the room for a half hour ...
i don't really think it is necessary to have things specially designed for stand processing ... but if it floats your boat and you have the $$$ go for it !
a thin mix?
i use more of a concentration than you think.
maybe you should spring for a subscription so you can see some of the 200+ images
i have using caffenol C and caffenol 130 that are in my gallery ...
i am sure a lot of people would love to see your results as well, since
you have been experimenting with this formula to such an extreme
i have been using it for 4-4.5 years, what about you ?
- john