I haven't used if for sabattier but I understand that the RH Designs Flasher with the diffuser removed makes a flasher that has the ability to reproduce results consistently.
I want to try the Sabattier effect on 6x9 film (APX 100, Fomapan 100, FP4+, or HP5+). I red Dr.Jolly's article and mixed his solarization developer but didn't find the right method of development and flashing yet.
Former in this thread you mentioned that you did solarization on film too. Will you share your experiences?