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  1. #31

    Join Date
    Sep 2002
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    22
    Quote Originally Posted by Jeremy Moore
    I purchased a Beseler motor base the other day for $15 at a garage sale in the hopes of using it with a Unicolor tube when I could find one to develop my sheet film as described at <a href='http://www.largeformatphotography.info/unicolor/' target='_blank'>http://www.largeformatphotography.in...lor/</a>



    ... stuff snipped ... If there's anything inherently wrong with this idea or you have any suggestions let me know!
    I am not familiar with that drum but I am assuming it is perfectly smooth inside without the angles that the Unicolor drum has to hold the film or paper. (I'm not talking about the ridges, but the "V" shaped angle at the "top" and the two single angles at the "bottom".

    If it is perfectly smooth then the issue I see is keeping the film separate if you do more than one sheet. It is possible that the sheets will move and end up overlapping, ruining them. With the Unicolor drum there is a spacer that keeps the 4x5 sheets apart and lacking a spacer I found a plastic spring type clothes pin works perfectly.

    If it has the "angles" but not the ridges you shouldn't have a problem. By the way you can create your own ridges by gluing in strips of plastic available at hobby shops. I've done that with Dev-Tec drums with excellent results.

    Sherman

  2. #32
    fhovie's Avatar
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    Mar 2003
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    Port Hueneme, California - USA
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    I just got to through in my $.02. I have a Jobo tank for 4x5 and motor rollers. I do use the motor for high energy developers but no longer for staining developers. PMK is a fairly weak deveolper and (thank goodness) pretty cheap. I mix up 1.25 liters of chemical to develop 6 sheets at a time (or less). I find that hand agitation with PMK offers noticably better accutance than using the rollers. I think the constant motion of the developer interferes with some ridge deveopment reducing some accutance. When hand processing, there I invert and swirl for 5 seconds every 25 seconds and noticed the improvement. I could never get good results with PMK on rollers when trying to develop more than 4 sheets with 500cc. The extra fluid prevents developer exhaustion.
    Frank
    My photos are always without all that distracting color ...

  3. #33

    Join Date
    Sep 2002
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    Boston, MA
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    I have tried the Unicolor drums and have the unicolor motor base. It seems both my drums leak badly. The seals seem not to work very well for me.

    Anyone know of any tricks to correct them?

    Thanks,
    John

  4. #34

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    Mar 2003
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    Walnut Creek, California
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    Try carefully removing the gaskets and soak them in really hot water. This trick worked for me and hopefully for you as these gaskets are like gold dust.

    Mike

  5. #35
    Aggie's Avatar
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    Jan 2003
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    So. Utah
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    ..

  6. #36

    Join Date
    Apr 2003
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    Southern NJ
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    Quote Originally Posted by Robert
    Doesn't the later beseler rotate?
    I used a Besseler Motor base with the Jobo 3000 series drums for for number of years. Mine rotated in both directions for the first 5 or so years then something broke. It still processed fine after that when it only went in one direction.

    You will nedd to pay attention to two things. 1)Make the motor base level and 2) put something at the end of the tank to keep it from walking off the motorbase. I used a bottle of chemistry, I have read that other people made a wooden-based where that the motorbase sat in and it had sides to hold the tanks from walking.

    George

  7. #37

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    Sep 2002
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    Boston, MA
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    Quote Originally Posted by MikeK
    Try carefully removing the gaskets and soak them in really hot water. This trick worked for me and hopefully for you as these gaskets are like gold dust.

    Mike
    Thanks Mike, I will try that..

    John.

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