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Recent content by ProfessorC1983

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    For Sale Darkroom items including 4x5 enlarger

    If you are considering a small "open house" to let a few local folks peruse your basement of wonders, I would happily make the drive over, but am certainly not in a position to take it all.
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    Ron Mowrey/PE's Emulsion Making Book/DVD set

    A few years ago I was able to track down a copy of the book and DVD set via interlibrary loan, I believe from the University of Texas. There are 2 or 3 copies in the ILL system in the US. It's not simply a matter of "getting the resources out to the community" since the material is copyrighted.
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    Help with flaking silver gelatin dry plates

    I find the same as the above, and typically add a drop of liquid soap to the cleaning solution, followed by a soft wipe with a clean sponge under running water, and then a final dip of the plate into a mix of distilled water and ethanol before the drying rack. That seems to cut down on "trouble...
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    For Sale Leica M4-2

    Oh no. Oh. No. OH NO. I will do my bank account the very difficult favor of waiting a few hours for some other motivated soul to relieve the sudden outward pressure you've created on my wallet. But then all bets are off.
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    Budget/DIY darkroom sink options?

    Blast from the past thread! OP update: I ended up building a sink with 3/4" plywood, caulking the joints, painting with white enamel, and coating the inside with standard 2-part clear epoxy. It worked a treat and has now survived an additional move and second darkroom buildout!
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    Ammonia digest emulsions

    Wow, thanks so much for following up here. I suspect something similar may be happening to me. I did buy the $10 spectroscope and tested my red LED bulbs (single-color, not wifi-enabled) and the lines seemed to light up right at 600nm, but given the low resolution of the device, that feels a bit...
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    Want to Buy Ries J100 or similar wood tripod legs

    Looking for a set of strong, vintage-y wooden tripod legs, ideally the Ries J100, Berlebach Report 312, or very similar. Capable of supporting ~20-25lb (Deardorff V8 plus a Gitzo 1570 head) with style. Willing to pick up within 100mi radius of Washington, DC.
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    Time for a new Alt Print Exchange?

    I'd love to join this round too if the rolls are still open! My prints may be slower than most, but I'm good for 'em.
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    Anti-halation coating for homemade silver gelatin plates and sheet film

    Hmm, interesting. I just stick a sheet of nonreflective "flocking" paper to the insides of all my plate holders and that seems to eliminate all the halation that I can see, but perhaps my eye is not as discerning and/or I'm just lazy. 🤪
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    Ammonia digest emulsions

    Yes that ISO is without any sensitizers. Certainly its speed could be improved by at least a couple of stops with slower precipitation and addition of sulfur/gold, but I've not yet tried as I'm happy with that speed for now (it's about 7 stops faster than my plain silver emulsions!). You're...
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    Ammonia digest emulsions

    Yes, silver addition time is one of the main variables that will determine emulsion speed and contrast. My goal is a high-contrast emulsion to use for making alt-process contact prints, so I use a very fast "dump" addition of 10 seconds with fast stirring (on a magnetic stirrer/hot plate), then...
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    Ammonia digest emulsions

    I've had some decent success with ammonia after a lot of trial and error. The process of converting silver is pretty well-described in the literature and you'll quickly get the hang of adding smaller and smaller amounts until it's one drop at a time, then suddenly clears. Good ventilation is of...
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    For Sale 2 x antique achromat brass lenses, pillbox type

    Any idea of the speed of these lenses?
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    Latent image keeping properties of homemade dry plates

    I'm considering taking a long cross-country road trip, packing an 8x10 and taking a series of images on homemade dry plates along the way. However, I won't be able to guarantee darkroom access and I'd rather not have to lug chemicals and trays and whatnot around the continent. Wondering if...
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    Source of Glass Plates

    I use a vendor on AliBaba that provides custom cut ~1mm thick float glass. For orders around ~100-200 plates plus freight, it works out to ~$1 per 4x5 or $3 per 8x10. Of course, higher volume would be cheaper since shipping from China is most of the cost. Surplus Shed also sells 12x12" 1mm...
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