Sold Cibachrome 8x10 Color Processing Drum with Caps + Extra Drum (w/out caps)

I’m making space in my darkroom and will be listing a number of items for sale.

This is a Cibachrome 8x10 Color Processing drum with top and bottom caps (one for filling and one for pouring out). Also included is an extra 8x10 drum without caps. These are great for B&W RC as well. This can be a good solution if you don’t like tray processing, are working with minimal darkroom space, or just prefer daylight processing tanks.

Asking $55 + $16 shipping (US)

Nice tanks that take paper well, and if you agitate for maximum development, it's a good system, that dumps well and will last, with care, for many years.

eli griggs said:

Nice tanks that take paper well, and if you agitate for maximum development, it's a good system, that dumps well and will last, with care, for many years.

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How are these used? Won't thw unheated tanks cool the chemicals, and how do you calculate for the paper not being totally submerged during development? I have some of these but have only used them for b&w film.

EASmithV said:

How are these used? Won't thw unheated tanks cool the chemicals, and how do you calculate for the paper not being totally submerged during development? I have some of these but have only used them for b&w film.

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There are instructions / guidelines that come with all of the different types of drums. I don’t have them on hand and last used these a few years ago so can’t remember the specific numbers but there are known volumes you use for solution which are the minimum volume needed. You pie in your solution and then keep the drum in constant rotation which circulates the solution across the surface area of the paper and provides agitation. These were originally used for standard color processing and I don’t think the temperature of the drum was a concern (outside of managing temperature throughout the rest of the process as standard). I never used them for standard color processing though so don’t quote me on that and I can’t speak to it any more than that. I used them for processing black and white and for RA-4 color direct positive (non-standard color which is more experimental and rarely produces what would be considered standard color image). In neither case was drum temp a concern. The drums were just kept room temp. This clip has a moment where you can see one of these being used by hand for the RA-4 reversal process.


If you use them for standard color you’d want to follow the standard guidelines. For other more experimental use cases the sky is the limit.

My experience, IIRC, is that there is a ledge or two running vertical up the tank, while stood up.

The print paper (or sheet film) is loaded by securing the paper against the ledges, face up, and replacing the tank's top.

The chemistry, colour or b&w, generally does not have time enough from the pour in, to make a significant difference before the developer cycle is up.

Pre-warming the tank beforehand , by filling it with at temp (or just above) and letting it sit for a minute or two, before dumping, is an option for some processes.

The measured chemistry is poured into the tank, why cradled on top of the Machine/roller base, through the cupped opening, while laying horizontal and the machine is turned on.

The measured chemical agent does not rise to the level of the tank's centered lid opening, so spillage is a non-issue (with normal handling) and the prints have moving developer, stop, bleach, fix, etc moving across it's sensitive face, until the final, in tank wash, with the lid off and fresh water or distilled water hosed into the bottom of the tank, or, if needed removed and washed normally, hopefully, by-way-of The Milford Method.

Double check on using toners or bleaches on b&w papers

I hope this helps someone curious about these tanks.

Cheers

PS: Chemistry is always setup to be at target temperature, for making the run.

Is this still available?

kwalt88 said:

Is this still available?

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Yes it is. Feel free to DM me if interested.

OK - just sent you a message.

Sorry to interrupt this thread. I have a question: do you need a gasket for these drums? If yes, do you need to replace them once in a while to keep them water tight?

blee1996 said:

Sorry to interrupt this thread. I have a question: do you need a gasket for these drums? If yes, do you need to replace them once in a while to keep them water tight?

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No, these are friction fit. There are no gaskets to be replaced.

I use Cibachrome drums with a roller to develop sheet film.
Very little chemistry is required.