3D printed drying tunnel for Paterson reels

Discussion in 'Camera Building, Repairs & Modification' started by Jockos, Feb 8, 2018.

  1. Jockos

    Jockos Member

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    Hi guys!

    I'm just about finishing up a new project of mine: a film dryer for Paterson reels.

    The tunnel is modular, and you can print out parts to accommodate as many reels as you'd like.
    The tunnel uses a standard 80mm computer fan and filter - should cost less than $10 on ebay.
    If you cant find a filter, I guess you could put the whole contraption in a sealed plastic bag to recirculate clean air, or put a stocking over the fan. You also need a 12V DC source to drive the fan.

    The design uses three interlocking parts:
    1. The lid, that houses one reel, the fan and filter.
    2. The middle part, houses one reel - print as many as you need!
    3. The bottom, has exhaust holes and has a trench that'll collect excess water.

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    I've fast printed a prototype, and everything seems to fit, but I'm sill waiting for the filter to arrive before I can do a live test.
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    The STL files can be downloaded from here:
    https://drive.google.com/open?id=1Z8RbaoYCpDqB1QcpXgLIrO95G8jFqkE9

    Please let me know what you think!
     
  2. FerruB

    FerruB Member

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    Nice! I like the idea to dry the film on the reel a lot, however I am wondering if the excess of water trapped in the reel may mark the film. For sure is worth trying, let me know how it goes!
     
  3. OP
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    Jockos

    Jockos Member

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    I don't think that's going to be a problem. Read about people using wind tunnels before, none mentioned this as a problem.
     
  4. AgX

    AgX Member

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    A filter chosen to safeguard cooling of a computer might not be enough to keep off tiny particles harming film.
     
  5. AgX

    AgX Member

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    Before air-stream drying one can remove possibly trapped water by centrifuging the reel still within the tank.
     
  6. darkroommike

    darkroommike Subscriber

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    You do know that there is a size of PVC pipe that would work the same and not use all that lovely filament?
     
  7. Born2Late

    Born2Late Subscriber
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    I built something similar a few years ago using PVC pipe. I attached a toilet flange to the pipe, mounted a PC fan to flange and sandwiched filter material in beween. It dries the film in 30 minutes or less. It isn't pretty but works great.
     
  8. OP
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    Jockos

    Jockos Member

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    Well this is the 21st century, and we're not BARBARIANS are we?
     
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    Jockos

    Jockos Member

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    may i ask, what kind of filter material are you using?
     
  10. Born2Late

    Born2Late Subscriber
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    It was some sort of foam filter material that was sold for making odd size furnace filters. I think I found it at the hardware store or Home Depot.
     
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