I like reading your post and your wealth of experience. I never tried the Kodak aprons and didn't know you couldn't invert or the problems you would have if you did.
I have a reel that has a clip that you snap open, stick the film into it, then snap it shut. I don't remember if its on a 120 or 35.
Other than a JOBO, how do you rotate a SS in a SS tank? I know you can twist and invert and such, and I never had any film walk out. When i think of twist or twirling, I think of the plastic tank with a stick or rod coming up the middle of the tanks, like the old Ansco or Yankee tanks.
I wonder what happens with the JOBO SS reels in use on one of their processors?
fotch:
The reason you cannot invert the Kodak apron tanks is that there is no way to close them - the fill spout on the top lid doesn't have a lid of its own. If you invert them, all the chemistry will pour out.

As for continuous rotary agitation of the tanks (whether SS or plastic), I put them inside a larger plastic container, and then put the whole contraption on a Beseler roller processor. That roller processor reverses every few seconds. Prior to using this roller processor, I used one that didn't automatically reverse, so I manually reversed the tanks every 30 seconds.
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