Replacement for that little white thing?

Discussion in 'Darkroom Equipment' started by sarahfoto, Feb 17, 2010.

  1. sarahfoto

    sarahfoto Member

    Messages:
    216
    Joined:
    Feb 21, 2008
    Location:
    Hönö, Sweden
    Shooter:
    Medium Format
    Help! I think I've accidentely scratched the white plastic above the negcarrier on my Durst 850 colour machine...
    Does anyone know if it's possible to replace it? Or do I have to get a new machine? It gives bright marks on the enlargements, see attachments, took me ages to figure out what it was.
    :confused:
    -Sarah
     

    Attached Files:

  2. largeformat pat

    largeformat pat Member

    Messages:
    287
    Joined:
    Jan 19, 2008
    Location:
    Upper Hunter
    Shooter:
    8x10 Format
    Hi,
    That is the plastic between the light source and the neg carrier? If so you can just replace the diffuser. And all is well. There is a places who can cut white perspex for you. Most sign writers have and can cut perspex for you.
    Hope this helps
    Pat
     
  3. sarahfoto

    sarahfoto Member

    Messages:
    216
    Joined:
    Feb 21, 2008
    Location:
    Hönö, Sweden
    Shooter:
    Medium Format
    Ah! It helps to know what it is called...
    Thing is I thought it would be easy to just find some new plastic but it's not flat, it's thicker in the middle.
    But now when I know the term, I'm sure it's easier to search for a new diffuser than a new "plastic thingy".
    Thanks!
    -Sarah
     
  4. Denis R

    Denis R Member

    Messages:
    284
    Joined:
    Oct 8, 2009
    Location:
    50156 & 5133
    Shooter:
    35mm
    neat

    nice effect, like a fog filter, I like
     
  5. bdial

    bdial Subscriber

    Messages:
    5,459
    Joined:
    Jan 2, 2005
    Location:
    North East U.S.
    Shooter:
    Multi Format
    It's likely thicker in the middle to even out the light. A flat replacement may not give you even illumination. As an alternative, see if you can just invert the one you have. The extra distance may make the scratch out of focus enough to not affect your prints.
     
  6. ricksplace

    ricksplace Member

    Messages:
    1,565
    Joined:
    Jan 22, 2006
    Location:
    Thunder Bay,
    Shooter:
    Multi Format
    Great idea. If turning it over doesn't work, try filling in the scratches (like noseoil on negs for scratches), and if that doesn't work, try sanding out the scratches. It's ruined the way it is now, so you really can't hurt it.
     
  7. ic-racer

    ic-racer Member

    Messages:
    7,513
    Joined:
    Feb 25, 2007
    Location:
    Midwest USA
    Shooter:
    Multi Format
    Finding a new diffuser may be quite a task. You might just look for a new mixing box of the appropriate size, which would have the diffuser in it.

    What size mixing box has been damaged?

    Here in the states Omega mixing boxes use a similar design diffuser which is still in current production. That diffuser could probably be made to fit the Durst mixing box.
     
  8. sarahfoto

    sarahfoto Member

    Messages:
    216
    Joined:
    Feb 21, 2008
    Location:
    Hönö, Sweden
    Shooter:
    Medium Format
    Tomorrow I will try to turn it around (if I don't break it when I bend it loose, it seems to be glued on). And I will check what size it is. Thank you all for your advice, wish me luck!
     
  9. ic-racer

    ic-racer Member

    Messages:
    7,513
    Joined:
    Feb 25, 2007
    Location:
    Midwest USA
    Shooter:
    Multi Format
    If it is like the Omega one, it may leave a circular pattern when you use it turned around but it is worth a try.
     
  10. largeformat pat

    largeformat pat Member

    Messages:
    287
    Joined:
    Jan 19, 2008
    Location:
    Upper Hunter
    Shooter:
    8x10 Format
    If you can't get the correct piece, you may be able to make a filter to cut down the density where the thicker part is. You could use you laser jet to print something on clear material and then cut and fit. Clear at the edge becoming greyish towards the middle.
    Pat
     
  11. ic-racer

    ic-racer Member

    Messages:
    7,513
    Joined:
    Feb 25, 2007
    Location:
    Midwest USA
    Shooter:
    Multi Format