I have developed Ilford Delta 100, and Foma 100/200/400 using the Mod54 for some time without a slipped sheet. Usual 4-5 inversions per minute technique. Am up to maybe 60-70 sheets done this way, so not tons, but enough to feel confident. I really like this solution compared to alternatives. You definitely want to practice loading in daylight with some spare dud sheets of film to get the hang of it before going to the tent with the real thing. Making sure emulsion side is pointing in is the key to nice, even development.
Bookmarks