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Thread: Durst L1840 Enlarger 8x10 10x10--Everything you wanted to know...

  1. #701

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    Re: Durst L1840 Enlarger 8x10 10x10--Everything you wanted to know...

    Quote Originally Posted by philcedozphotos View Post
    I’ve got a guy who may be able to 3d print a new one.


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    now this starts to get interesting... which materials? cost per unit?

  2. #702
    PhilCedozPhotos
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    Re: Durst L1840 Enlarger 8x10 10x10--Everything you wanted to know...

    Quote Originally Posted by Andrea Gazzoni View Post
    now this starts to get interesting... which materials? cost per unit?
    I don’t know. Once I get a new one I’ll send him the old one with the new measurements. We’ll go from there.


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  3. #703
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    Re: Durst L1840 Enlarger 8x10 10x10--Everything you wanted to know...

    Quote Originally Posted by philcedozphotos View Post
    I’ve been looking for a large format enlarger for a while. Like you said I wanted one that had no circuits. This gear was a total surprise and probably the hardest thing to replace.

    Any ideas on converting to a bulb that doesn’t get hotter than the sun?


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    What head/bulb do you have? There were 5 different Durst heads and many other brands fit too.

  4. #704
    PhilCedozPhotos
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    Re: Durst L1840 Enlarger 8x10 10x10--Everything you wanted to know...

    Quote Originally Posted by ic-racer View Post
    What head/bulb do you have? There were 5 different Durst heads and many other brands fit too.
    It’s the Laborator condenser head.


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  5. #705

    Re: Durst L1840 Enlarger 8x10 10x10--Everything you wanted to know...

    Maybe you can take the width and thickness of the stripped gear as well as what is on the other side mating it and replace them both concurrently as a pair? The shaft thickness can be adjusted as necessary as is the cotter pin hole. Sure might be easier than finding the original specs. By the way I have two brand new Lacon 380 184 condensers in their boxes and another barely used from a day long ago.

  6. #706
    PhilCedozPhotos
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    Re: Durst L1840 Enlarger 8x10 10x10--Everything you wanted to know...

    Quote Originally Posted by Michael Kadillak View Post
    Maybe you can take the width and thickness of the stripped gear as well as what is on the other side mating it and replace them both concurrently as a pair? The shaft thickness can be adjusted as necessary as is the cotter pin hole. Sure might be easier than finding the original specs. By the way I have two brand new Lacon 380 184 condensers in their boxes and another barely used from a day long ago.

    That was one option I have considered. I have 2 Lacon 380s and 1 350. This pic was just taken in the middle of reassembly in my darkroom. I usually do 6x6. Will the condenser size matter that much?

  7. #707
    PhilCedozPhotos
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    Re: Durst L1840 Enlarger 8x10 10x10--Everything you wanted to know...


    The people selling it were an environmental planning company. They used to get aerial negatives and blow them up to make maps, etc. It came with this 2 glass carrier that is marked Foto-Optical Corp. anyone know anything about these?


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  8. #708
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    Re: Durst L1840 Enlarger 8x10 10x10--Everything you wanted to know...

    Condenser focal length and lens focal length need to be coordinated via the chart in the manual to ensure even distribution of light. The way I think of it is the condensers are focusing the light at a certain spot and the lens needs to be at that spot. If the lens is too long or too short, it will not be in the right spot. If you are just using the center of the light (6x6cm) you might be able to violate this and get good results. That is you could try those 380 condensers with a 80mm or 105mm lens and see how even the projected field is.

  9. #709
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    Re: Durst L1840 Enlarger 8x10 10x10--Everything you wanted to know...

    Every time bulbs for that head are discussed I always post the same thing. Consider using an diffusion disk as the target for the condensers (rather than the globe of the hard-to-find lamp) and illuminate the diffusion disk from behind with any light you want. That is how my Philips condenser color head works. You could use LED or Halogen or anything else for illumination behind the disk.
    Click image for larger version. 

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  10. #710
    PhilCedozPhotos
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    Re: Durst L1840 Enlarger 8x10 10x10--Everything you wanted to know...

    Quote Originally Posted by ic-racer View Post
    Every time bulbs for that head are discussed I always post the same thing. Consider using an diffusion disk as the target for the condensers (rather than the globe of the hard-to-find lamp) and illuminate the diffusion disk from behind with any light you want. That is how my Philips condenser color head works. You could use LED or Halogen or anything else for illumination behind the disk.
    Click image for larger version. 

Name:	Philips.jpg 
Views:	22 
Size:	42.4 KB 
ID:	204058Click image for larger version. 

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ID:	204057
    Awesome, where do i get one? Is it special material or just a translucent plastic.


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