Here’s a rotary film processing assistant on kickstarter that looks very well made. I’m curious about how much difference in processing times a rotary drum makes, and whether drum speed, reversal matter. I see that the AuRA’s standard processing turns fast for 30 seconds then slows down. Is this really the equal of agitation? Should a vane or other protrusion be put in the drum to assist with mixing? I’m guessing that the film reels will provide enough opportunity for mixing that nothing else is needed, even reversal, and the turn speed will become the overriding factor. If anyone has experience with this, please comment.