From: Brian L. Frye (email suppressed)
Date: Sun Feb 06 2011 - 09:10:43 PST
I used to make the dichromate bleach all the time. Easy & effective. I still have plenty of the raw materials, but shipping can be troublesome.
Brian L. Frye
906 Claryville Road
Claryville, NY 12725
On Feb 6, 2011, at 11:30 AM, Scott Stark <email suppressed> wrote:
> Hi, I was wondering if anyone on the list has had experience with
> processing Kodachrome as black and white. I was given a few rolls of
> exposed 16mm that missed the Dwayne's deadline, and I've been
> experimenting with it. A couple of things:
> - The first roll came out reasonably good (as negative), but the
> black backing soiled the chemistry, and the next roll came out
> covered in black. It seemed like more black was added to the film,
> and the images didn't get completely processed or fixed. How does one
> deal with the black backing? Any way to remove it other than scrubbing it off?
> - In order to create a reversal image, a bleach bath is required, but
> I haven't found any camera store that sells the photo bleach. (I
> believe Kodak used to sell it as part of a reversal kit, which I
> don't think is available any more.) I've seen on the web something
> about mixing potassium dichromate with diluted sulfuric acid. Has
> anyone tried this, and can these chemicals be purchased (without
> getting one put on some security risk list)?
> I'd be interested to hear anyone's experiences with this process.
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