reels for JOBO 1520?

Discussion in 'Darkroom Equipment' started by jdhart73, Feb 7, 2011.

  1. jdhart73

    jdhart73 Member

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    I picked up a JOBO 1520 tank that came with a plastic reel that does not have the ball bearings and its kind of tricky to load. My question is, will any plastic reel work with this particular tank? I just want the easiest loading possible since I am new to this!

    Thanks,
    Jake
     
  2. paul_c5x4

    paul_c5x4 Subscriber

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    The Paterson reels are of a larger diameter, so no - Any old reel will not fit in the Jobo tank.
    To be honest, I don't have any trouble loading my Jobo reel with 120 film.
     
  3. Sirius Glass

    Sirius Glass Subscriber

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    The plastic Jobo reels are available at FreeStyle, at least at there Sunset Boulevard Store if not web page. They are an APUG supporter.

    Steve
     
  4. Ed Sukach

    Ed Sukach Member

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    JOBO reels do not have the ball-and-ramp system (probably patented by Paterson). A couple of things may help: first, disassemble the JOBO reel and scrub the tracks - I've found that a toothbrush and ordinary toothpaste works well. Second, be careful NOT to squeeze the outer edges of the reel together as you feed the film between them. Third ... It pays to drive your wife/ husband, significant other ... yourself... up the walls as you practice, practice, practice loading a sacrificed roll of film - keep your eyes closed to simulate the darkroom.
    "Muscle memory" is invaluable here.

    I've used these puppies for ten? ... twenty? years now and have only misloaded three rolls of 120 - NONE! lately, despite being acutely and chronically clumsy.
     
  5. jdhart73

    jdhart73 Member

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    Thanks for the feedback guys. I am practicing loading, I guess I was confused because all of the tutorials I see make it look very easy to advance the film onto the reel by rotating the reel... when I do this it either backs film off or does not move at all unless I put my thumbs on the film to help advance it. Am I doing something wrong?
     
  6. Sirius Glass

    Sirius Glass Subscriber

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    No, you are where you should be now.
     
  7. jdhart73

    jdhart73 Member

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    Wow, thanks Sirius? (shrugs)
     
  8. MattKing

    MattKing Subscriber

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    It is necessary to use your thumbs, but maybe not quite in the way you think.

    The edge of the film should contact your thumbs, so when you rotate one side of the reel, the film moves with it.
     
  9. jdhart73

    jdhart73 Member

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    Thanks Matt, thats what I am practicing. Holding the film down with one thumb as I turn the reel in order to advance it. I wasnt sure if this would cause issues (fingerprints etc) during the developing?
     
  10. carlosmccosta

    carlosmccosta Member

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    Train to use one finger to block the film only on the edge.
     
  11. jdhart73

    jdhart73 Member

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    Thank you Carlos.... good advice. It is very hard to advance the film in the reel for some reason, bought this set up used..not sure if that would matter?
    I grasp the concept, but for some reason it does not want to advance most of the time. When I go to advance it, it will buckle or bend the film as if its hitting something and wont go forward.

    Will keep playing with it.
     
  12. MattKing

    MattKing Subscriber

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    Sounds like the reels may need cleaning.
     
  13. rawhead

    rawhead Subscriber

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    First, I go ahead and use four fingers placed firmly on the film to advance it onto the reel. You're touching the non-emulsion side of the film so there's really no issues. At least, the 100+ rolls I've developed in my Jobo tanks haven't seen any issues.

    At the same time, it does sound like your reels need cleaning. Soak in soap water, brush with a toothbrush, then maybe soak in bleach water over night. It also helps a lot to heat the reel with a hair dryer immediately before loading, which serves to (a) make sure there is absolutely no moisture on the reels and (b) I'm guessing it also expands the grooves just a tiny bit to allow for smoother transport of the film.


    Another thing that works well is to advance the film by holding the two sides of the film, just where the reels have those two indents.
     
  14. RobertV

    RobertV Member

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    Jobo 1501 reels, are loading very easily. They are for the 1500 system tanks. Jobo 2502 reels are even more easier to load (2500 tank system, rotation).
    If you have hard water (Calcium) the balls from the Paterson tanks are blocked and the system is not working well. But you can read above that the loading technique is a bit different.

    Greetz,

    Robert

    (Have Jobo and Paterson but I prefer the (Makrolon) Jobo reels)
     
  15. Diapositivo

    Diapositivo Subscriber

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    A mistake I was doing, and which results in difficulty in advancing the film, is to cut the film leader with an "inverted U" shape. When the film advances inside the reel, the bottom of the U (the most advanced part) is past the contact points of the film with the reel, it protrudes a bit. When you advance the film into the reel (especially a small one like those for the Jobo 1500 series) the protruding part will touch the film in the outer spire.

    The leader must be cut as a Π not as a U, rounding the corners just a bit.

    Fabrizio
     
  16. jdhart73

    jdhart73 Member

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    Thank you again everyone. Am soaking the reel and will brush clean and practice some more tonight. I did taper cut the end of the film to see if that helped it from getting caught up on the splines during loading but it only helped the film come off the track easier. I am sure it is user error, I just need to keep playing with it!

    Thanks,
    Jake
     
  17. phaedrus

    phaedrus Member

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    If you bought it used (how else, nowadays) the reels could already be silvered (a grey tinge on the white plastic). This precipitate, while not in itself a problem, is rougher than the plastic underneath. I'm too lazy to use a toothbrush on it, I just pop them in the dishwasher at the lowest temperature. Does the job.
     
  18. MPandolfo

    MPandolfo Member

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    Of course you noticed that the reel's guides have a section that is thiner in order to allow your index fingers to touch the edges of both sides the film. You must press and release each finger alternately at the same time you twist each half of the reel. Right hand: press-twist-release, left hand: press-twist-release, right hand... .Is much easier and intuitive than it sounds.

    In order to work, reels must be clean and absolutely dry. Also, you must clip just a little bit of the corners of leading end of the film, avoiding to cut through the perforations in order to "round" the leader and prevent it from catching the reel's ribs.
     
  19. jdhart73

    jdhart73 Member

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    Thanks MP, I have been playing with it and its getting easier since ive washed and practiced. I am loading 120 film, so no perforations.
     
  20. john_s

    john_s Subscriber

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    Before loading I bend the corners of the film film in the opposite direction to the natural curl. Not an angular bend, just easing it a bit straighter.