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  1. 4x5 film developing reel/holder/insert for paterson 3 tank

    Made out of aluminium (sometimes carbon fiber), sandblasted,with an applied conversion coating to delay oxidation, these holders fit a standard Paterson 3 tank. They hold 8 sheets of 4x5 film, and...
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    Re: Film Holder End Flap Repair

    This stuff works very well

    http://www.shopbrodart.com/Library-Supplies/Book-Care-and-Repair-Supplies/Tapes/Cloth-Tape/_/Brodart-Cloth-Tape?q=42044033
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    Re: 8x10 film processing

    Does constant agitation flatten the mids?
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    Re: DIY 4x5 Enlarger with LED light source

    Great. Thank you.
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    Re: DIY 4x5 Enlarger with LED light source

    Excellent work !!
    Love the concept and execution.
    Hopp Schwiiz !! ;-)

    Any reason, why one shouldn't use LED strip lights as a light source? Some green, blue and UV ones perhaps?
  6. Thread: Bellows Material

    by radii
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    Re: Bellows Material

    I've used both glues on the bk5 fabric, and they haven't failed, 2-3 years later.
  7. Thread: Bellows Material

    by radii
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    Re: Bellows Material

    yes, it's good. Used in two layers, it's lightproof.
    Glue the ribs on with 3m transfer tape, or 77 spraymount, on the shiny side of the fabric.
    As it's very thin and flexible, bellows larger than...
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    Re: DIY 5 1/2 x 14 'cause, why not

    Beautiful !
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    Re: Chinese changing tents?

    I own that exact 11x14, chinese ebay tent. I've only used it at home, for the past 4 years or so, once or twice a month. It's light tight, doesn't smell or feel sticky.
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    Re: Internal reflection in Zone VI 4x5

    If it was a light leak or internal reflection, the line wouldn't be as sharp and focused as it is.
    If you're scanning your negatives, make sure that the startup calibration area of the CCD sensor is...
  11. Thread: Bellows Material

    by radii
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    Re: Bellows Material

    Both really. I tested it with a flash, and minute amount of stray light was coming through a single layer. Maybe neglect able, but having the ribs in between the two layers, just made sense to me.
  12. Thread: Bellows Material

    by radii
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    5,702

    Re: Bellows Material

    I've used the BK5 material on several bellows that I've made. Two layers with stiffening ribs sandwiched in between works great, light proof and very flexible. The downsides are, that it's difficult...
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    Re: How to print a shutter

    Very, very, very cool !!
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    Re: spring steel for camera back?

    I used phosphor bronze shim stock for my build

    https://www.mcmaster.com/9014k315
  15. Thread: Tripod Head DIY

    by radii
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    Re: Tripod Head DIY

    Looks great !

    Can't wait to see the final product.
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    Re: Building a new 4x5 camera

    Looking good. Really like the beech wood.
  17. Thread: DIY ULF Camera

    by radii
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    Re: DIY ULF Camera

    Wow!! ULF indeed !! Looks clean and sturdy. I like it.
    Can you extend the bellows out to 1:1 lifesize magnification?

    As a side note, I have a hard time seeing the 48”x48” size, in relationship to...
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    Re: DIY Drum Scanner?

    What an awesomely pragmatic approach. Bravo !!

    Great project though to sink one's teeth in ...
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    Re: Film Holder Repair

    I've used this one:

    http://www.shopbrodart.com/Library-Supplies/Book-Care-and-Repair-Supplies/Tapes/Cloth-Tape/_/Brodart-Cloth-Tape?q=42044033

    works great.
  20. Re: Options for sliding mechanism of lens carrier plate on 11x14 DIY

    I don't know to what overall level of quality you're building your camera, but I'd say that those ebay linear bearings will be more than adequate.
    A difference between a low cost bearing from china...
  21. Re: Which adhesive for bonding cardboard stiffeners to fabric?

    I find that contac cements, such as Pliobond 25, work great, but are hard to apply cleanly.

    Transfer tape is a good alternative. Easy to apply and doesn't degrade over time. Somewhat expensive...
  22. Re: Special X-Ray Double face 5x7 (13x18cm) Film Holder Spiral Reel for Jobo 2800

    very nice!

    how did you make it?
  23. Thread: ULF holders

    by radii
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    Re: ULF holders

    There's an option out there for anybody that is not Anish Kapoor.

    https://www.wmagazine.com/story/anish-kapoor-stuart-semple-blackest-black
  24. Thread: ULF holders

    by radii
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    Re: ULF holders

    Which ones are and why do you ask?
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    Re: 14x17 build, with filmholders and tripod

    The supports I made are somewhat adjustable (the carbon fiber rod can be moved forwards and backwards, depending on bellows extension), and are far from ideal, BUT the bellows have yet to show up in...
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    Re: 14x17 build, with filmholders and tripod

    I did consider that, but didn't know how to attach the tabs to the fabric without introducing the possibility of eventual light leaks.
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    Re: 14x17 build, with filmholders and tripod

    yes, maybe some double stick tape to pull it up, or close the slide in the upright position only? Hard to do with my changing tent setup ...
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    Re: 14x17 build, with filmholders and tripod

    The slide definitely does flex to the point of touching the septum. The leading edge there is rounded and sanded smooth to facilitate the entry into the bottom flap. I have not checked my negatives...
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    Re: 14x17 build, with filmholders and tripod

    Actually it did take care of about 75% of the bow, and the straight and rigid walnut stiles did the rest.
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    Re: 14x17 film holder build question

    That looks like a reasonable way to construct the stiles. When gluing up the sandwich, minimize glue squeeze out in the dark slide and septum slots if you can. Maybe mask it with clear tape or spot...
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    Re: 14x17 film holder build question

    In hindsight, a 1/16" thick Garolite septum could have been sufficient as well, but 1/8" is not a bad choice, all things considered. A lot (most?) of the rigidness off the holder will come from the...
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    Re: 14x17 film holder build question

    Disregarding cost, I'd go with 1/8" carbon fiber sheets. Lightweight, flat, stable, lightproof.
    Next choice would be Garolite or black acrylic. Garolite would be very consistent in thickness,...
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    Re: Show off your ULF camera

    That's a good question !

    The short answer would be that form does not always follow function. There's a lot of hot, artistic air in the design of the base.

    I wanted the camera to have a...
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    Re: 14x17 build, with filmholders and tripod

    The septum is actually also Garolite XX, .125" thick. The beige color was cheaper than pure black. The machined concentric circles were an effort to relieve the stress in the material and flatten it...
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    Re: 14x17 build, with filmholders and tripod

    1/32" is definitely thin and can easily snap and break if mishandled. It is however 100% light proof and the weight savings compared to a 1/16" thickness, just made sense to me. Maybe even more of a...
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    Re: 14x17 build, with filmholders and tripod

    Yes, 0.03" Garolite XX from McMaster
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    Re: Show off your ULF camera

    Thank you everybody.
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    Re: 14x17 build, with filmholders and tripod

    Thanks for the pointers Colin.
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    Re: 14x17 build, with filmholders and tripod

    It is definitely a Ries imitation, but in no way superior. I've never used a Ries myself, but can only imagine how smooth and secure the leg support is.
    The tolerances in the moving sleeve that...
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    Re: Show off your ULF camera

    Thank you

    It has all the typical front standard movements (up, down, left, right, swing, tilt), but no rear standard ones (besides forward tilt, which is really more part of the folding mechanism...
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