Advice based on my own experiences
Processing a Cine film is not difficult. It is the same as for ordinary film. Having up to 50 feet ( 15 m ) of film is the big difference.
My experience is based on using the Russian tank that takes up to 15 m of film on each spiral. There are two spirals with suitable spacers. The spacers enable the spirals to be set for 8mm or 16mm. It would be easy create a spacer to accommodate 9.5mm film.
I think the spacers can also set it to take 15m of 35mm film, but I must admit I have not tried this. My instructions have long gone.
My experiences are recent, July 2002, and relate to super-8 film. I have just processed black and white film to negative. Once the film is in the tank the processing is straight forward. Most of the problems are in the loading.
I have also discovered I can carry all of the procedures out in a large changing bag. This saves having a special dark room, or waiting until night time before loading.
My procedure
I can manage all the following inside a large changing bag
Remove the film from the cassette and wind onto a small spool. I have now made a small fixture that winds up to two spools from two super-8 cartridges at the same time. Hold the film in the left hand. Make sure the sprockets on the film are downwards. This ensures this part of the film sits in the groove. The top of the spiral, with no grooves is not in place at this stage. Load the film from the centre. Simply 'lock' the film onto the centre core. This is only friction holding so do not pull too hard. It holds enough for loading. Tilt the spool in the left hand about 45 degree away from the centre. Keeping a gentle tension on the film fit the top part of the spiral. Keep a gentle tension on the spool. Between the the fingers seems to work. Gently rotate the spiral clockwise. Keep the spool at 45 degrees. Rotate the spiral until all the film is loaded. Place in tank. Secure. You can now return to daylight.
To make the loading process easier I made this simple fixture.
Two cartridges are clamp together, and two reels, with a spacer between them are fitted to a spindle. The film can then be unwound from the cartridge to the reel, from which it is much easier to load onto the spiral.
Try out this procedure with a roll of developed film first. It is straight forward, but practise helps.
This is what the film looks like in the spiral. the picture was taken after development!
For more details on home processing techniques and chemicals follow this link: Movie film processing