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  1. Replies
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    Re: Adapting a Projector Lens

    Hot glue is reversible, at least. If it were me, Iíd 3D print a spacer that allowed for a nice friction fit to the lens barrel/helicoid thread. But takes a bit of fiddling and a printer to...
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    Verito 14.5 inch

    Be aware youíll have to adjust focus for wetplate. The bit of remaining chromatic aberration of the Verito plus the very orthochromatic chemistry means the blue/UV is a bit behind of the greenish...
  3. Re: Further Refinement of Plexiglass Ground Glass

    For plexiglass, I really love the brightness and detail I get when lightly sandblasted. Takes about 45 seconds to do an 8x10 sheet nicely. The garnet grit in the blaster had been used a bit, and kept...
  4. Re: To build a Large format lens w/ an aero military lens & a shutter

    Too big/heavy/longÖ. or poisoned with radioactive elements? Haha.

    Or a bit of both like my f2.5 12Ē Aero Ektar in working Fairchild shutter. Itís 25 lbsÖ. and a chunk of that is thorium.


    Sent...
  5. Re: To build a Large format lens w/ an aero military lens & a shutter

    Where are you located? In many parts of the world, itís cheapest to be patient and get a decent 4x5 setup thatís already together.


    Sent from my iPhone using Tapatalk
  6. Re: 3d Printed offset for Lomograflok with ground glass holder attachment

    Hell yeah, Iím working in something similar for another Lomograflok application. Glad to see the ingenuity here!


    Sent from my iPhone using Tapatalk
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    Re: 3d printing lens boards

    Nice, looks like you could raise the nozzle a bit more to get rid of the bit of wave pattern on the bottom, but thatís just cosmetic and on the inside so the board will do well.

    Always little...
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    3d printing lens boards

    I print a lot of boards. I tested about 30+ filaments over the years (out of curiosity) using a densitometer. Any black ABS is usually the most opaque. Black PLA is often decent but warps in summer...
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    Re: 3D-printing a silver tank?

    In that case, PETG printed hot and slow is your best bet. Each layer should melt the bottom layer a good bit so the bonding is really good. The surface might not be as beautiful, but it will be as...
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    Re: 3D-printing a silver tank?

    First off, people can always just use trays for sensitizing. A tray with a bigger tray over it is light tight.

    Itís possible to print a tank, going slow with PETG or ABS can get good watertight...
  11. Re: Universal Heliar - Soft focus mechanism servicing

    Writing, yes.

    I need to pull mine apart to get a flange made (so I can ship it), so youíre giving me the motivation to go do it. Iíll check my middle element alignment later tonight too. Thanks!...
  12. Universal Heliar - Soft focus mechanism servicing

    Overall, it was pretty easy to clean in the end as long as the threads are all clean enough to unscrew.
  13. Universal Heliar - Soft focus mechanism servicing

    Like this, Stevenís SN must have ended in 45, and mine had that number written in pencil on the glass elements toohttps://uploads.tapatalk-cdn.com/20210612/6c45f4a125c65af5fbfa599d76e97be5.jpg

    ...
  14. Re: Universal Heliar - Soft focus mechanism servicing

    Yes, take off aperture ring and the black sheath part will slide off toward the front. I see you already have the nubs off. Keep track of how the middle element is oriented. It may be symmetrical or...
  15. Re: Spectral sensitivity of collodion and orthochromatic film

    It all depends on the silver halides. AgI, AgBr, and AgCl are the 3 to pick from each with a different peak frequency, then different spectral sensitizers extend the visible range into the visible...
  16. Re: Night time wet plates, has anyone succeded?

    You just need to fill the camera with alcohol and ether vapors so the plate doesnít dry out...whatís the worst that can happen?

    But like Garrett said, itís not really a plausible pursuit. And...
  17. Night time wet plates, has anyone succeded?

    You might want to try shooting paper negatives to get a feel for how something slow and orthochromatic ďseesĒ the scenes before committing to plates. Then you can see if itís feasible. If you need a...
  18. Night time wet plates, has anyone succeded?

    Not a lot of actinic light available at night. At f4 on TXP320 by full moon, I need maybe 5-10 minutes at f4 so f8 on tintype seems hopeless, though the reciprocity failure might not be as bad (not...
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    Re: Storage of Exposed/developed glass plates?

    Iíve been using Print File paper envelopes. Not sure if some of the plastic holders have enough space for the thicker glass. Theyíre pretty tight on sheet film already.


    Sent from my iPhone using...
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    Re: Northern Virginia/Washington, DC

    I PMd you for details. Thanks Scott.


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    Re: Northern Virginia/Washington, DC

    Just joining this chain since I live in the area and wish to follow updates.


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    Re: Long exposure experience with portraits?

    With that beard, thereís too much air drag to run anywhere in a hurry! Best suited to stationary gandering and pondering.


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    Long exposure experience with portraits?

    That head brace went for big bucks since it was original from the 1860ís, Rob Gibson was the seller and heís a well known and reputable fella/wetplater/re-enactor. I saw people calling that ďa good...
  24. Re: Universal Heliar - Soft focus mechanism servicing

    That was not bad at all. In and out in under an hour with some extensive cleaning (mechanisms moved, just needed to clean some crud on each element). Thanks so much Steven.
  25. Re: Universal Heliar - Soft focus mechanism servicing

    This is incredibly helpful. I need to clean some internal grime from a pre-Universal and now have the confidence to do so without great trepidation.
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