Bulk loading: duplicating film: 100' roll with a 2" U-Core

Discussion in 'Darkroom Developing and Printing' started by Nicholas O. Lindan, Jul 15, 2003.

  1. I have a job of duping some 700+ slides. Fun, right?

    I looked at duplicating film from B&H:
    o 35mm 36 exposure cassette @ $8.49ea
    o 100' bulk roll @ $51.59

    Having 1/2 Scott blood in my veins, I figure I can get 17(?) rolls of 36 exp.
    from 100', yielding a bulk cost of $3.00 a roll.

    The catch(es) are: the bulk film comes on a "2 inch U-Core" and perforations
    are "Standard". I take it this means movie film (Ref Kodak Pub. H-2).

    My question is: is there anyway in H. to use this stuff in a 35mm SLR?
    Nicholas O. Lindan, Jul 15, 2003
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  2. Nicholas O. Lindan

    Manny Bhuta Guest

    I have had good results with Kodak Slide Duplicating film 5071. I have
    a 100 foot roll that is like any other bulk film that you can use to
    load standard 35mm cassettes. I bought it many years ago and do not
    know if its still available.
    Manny Bhuta, Jul 15, 2003
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  3. Don't know about what to do about the large core. 35mm
    film comes in two types of perforations (actually more but
    these are the common ones). Negative perforations, called
    Bell and Howell perfs, and postitive perfs called Kodak
    Standard perfs. All films for 35mm still cameras come with
    Kodak Standard perfs. However, both run on exactly the same
    sprockets. B&H perfs have rounded sides where KS perfs are
    oblong with rounded corners. B&H perfs register more
    accurately but KS perfs are more rugged and have less
    tendency to tear during projection. There are other perfs,
    like Cinemascope and DuBray-Howell, but you will never see
    them on bulk film.
    Richard Knoppow, Jul 15, 2003
  4. Just a warning about bulk-loaded film. You don't mention how you intend
    to get it processed. Some photo labs flatly reject bulk loads, since
    they don't really know what film it actually is, and they have too often
    either screwed up the processing, or their chemicals.

    If you intend doing it yourself, no problem, but if you intend sending
    it out, check with the lab first to make sure there will be no problems.
    James Robinson, Jul 15, 2003
  5. Nicholas O. Lindan

    Gary Beasley Guest

    I've had to deal with the 2 inch core before. I rewound the film by
    hand onto the old core a regular bulk roll comes on. Gloves are a
    must! Laying both flat on a table while rerolling from one core to
    another is the easiest, finding something to jam into the hole in the
    regular core to use as a handle helps a lot.
    Gary Beasley, Jul 16, 2003
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