Updated: 6/22/05; 3:26:57 PM.
Darkroom
building and using a darkroom.
June 2005
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Wednesday, June 22, 2005
  10:46:23 AM  
Darkroom construction report: next steps after the completion of the ventilation system...

  1. The hvac guys had to rip out about 10 feet of a stud wall in the darkroom to install the long vent hood. That wall will have to be rebuilt.
  2. Refine the plumbing and electrical system designs
  3. Insulate and cover the stud walls with greenboard
  4. Bring in the sinks and plumb the darkroom
  5. Wire the darkroom
  6. Build a specialized enlarger table
  7. Install a darkroom door
  8. Install an access panel for the furnace
  9. make sure various miscellaneous tasks are completed
    • water chiller is charged with coolant and installed
    • install the print washing sink outside of the darkroom
    • make sure the room is lightsafe
    • make sure the ventialtion system works sufficiently
    • more to follow, no doubt...

Tuesday, June 21, 2005
  9:22:58 AM  
Day 2 of the installation of the darkroom ventilation system

Cooper Mechanical came back this morning at 9:00a to finish up the installation of the ductwork. Later I will have an electrician wire the fan to the circuit board.

So far so good.


Monday, June 20, 2005
  3:38:57 PM  
A picture named problemsolved.jpg
problem solved

Update 2: The previous problem that prevented completion today has been resolved. New problems that prevent completion today have taken its place.

A piece of rectangular duct was made to work and the problem from Update 1 has been resolved without customer fabrication.

Real progress today but not quite finished.

  12:31:47 PM  
A picture named problem_duct.jpg
problematic vent hood
Update 1: Yack, there is already a problem that will prevent completion of the darkroom ventilation system by this afternoon.

Because the ceiling is low and because the ductwork for the main household hvac is near the ceiling, the 130" vent hood has to go in horizontally. A 10" duct has to be tapped out of the top of the horizontal vent hood, but the 10" duct must fit underneath the main household ductwork. The intention was to use a 10" elbow but as demonstrated in the picture, the elbow will not fit underneath the main ductwork for the house.

Cooper Mechanical will have to build a simple custom rectangular duct to come out of the top of the hood and then attach round 10" duct to that. The added 90-degree angle is not beneficial to air flow.

The custom part cannot be fabricated today. Between fabrication and scheduling the installation, I expect to lose a minimum of another week. Who knows, maybe I'll be wrong. Even if I am correct, the enormous part of the task is well on its way toward completion. No more months and months of hassles (I hope :)!

  10:47:53 AM  
A picture named hvac_pieces.jpg
hvac ductwork in a holding pattern on my 'lawn'
Darkroom ventilation is being installed today!

The ductwork pictured here will work its way into my basement and will form the exhaust ventilation for the darkroom. There will be two hoods (the small one is pictured in the foreground) covering about 16 feet of sink. Each hood will go into a 10" duct. The 10 inch ducts will merge into a 12 inch duct which traverses the width of the house. A 900 cfm fan will be placed close to the exhaust point. A 12" make-up air duct without a blower will be brought in underneath the exhaust ductwork. Make-up air will open near the sinks.

It has taken almost three years of modifications to the house and almost two years of hvac-related hassles to reach this point. After three years of anticipation, the darkroom will be significantly closer to operating condition this afternoon. There will still be plenty of contruction left, but it is somehow easier to locate people who can do the remaining part -- mostly plumbing, sheetrock and building a specialized enlarger table. There will be a little bit of electrical work to do also.

The hvac stuff was far and away the hardest work to do. I spoke to literally 8 or 10 different companies about it. I ened up using a commercial firm which does a bit of residential work when time allows. Because the residential work is low on the priority list, it has literally taken *many* months of calling and begging this company to do the work. Part of that time is due to the fact that I cannot afford to pay enormous amounts of money for the job (it will be about two thousand dollars as is). It is a case of "quality price or service, pick any two". I chose quality and price.

The upside of using this particular commercial firm is that they can do anything the task requires. They can model then form the ductwork, weld, jackhammer and otherwise not flinch at any mechanical requirement of the job. In addition, they have the engineering ability to handle to the technical issues. None of the other hvac companies that I talked to had the combination of skills needed to do the job. Most of the other companies shot themselves in the foot within 30 minutes by insisting that they understood the problem when I could tell that they did not. other companies shot themselves in the foot by only recommending very expensive (let's say $10,000-ish) solutions. The $10,000 approach might be more perfect in terms of hvac theory, but it was simply beyond my budget. I internally estimated that I should be able to vent the darkroom for around $1,000. By sticking to that conviction, I eventually got the job done and done correctly at a considerable savings relative to the upper end quotes.

I made a few concessions to keep the cost down:

  • Galvanized metal for the ductwork instead of stainless or ideally pvc.
  • A 5 sone exhaust fan is louder than I wanted. I will have to engineer some way to dampen the sound.
  • The make-up air ductwork is not ideally located or engineered. That compromise was dictated by more than the cost -- the room itself limits the location and design of the make-up air.

Thursday, December 9, 2004
  2:40:20 PM  
David Kachel's new web site.

Wednesday, June 23, 2004
  11:58:29 AM  
Boing Boing Photographers' bust card. Here's a great printable one-pager that describes what you're legally allowed to take pictures of, and what to do if someone tries to bust you for it.

148K PDF Link

(Thanks, Tom!) [Boing Boing]


Wednesday, May 26, 2004
  1:23:23 PM  
Yahoo! News Photographer Makes High-Resolution Camera (AP). AP - When photographer Clifford Ross first saw Colorado's Mt. Sopris, he was so taken with the beauty of the mammoth formation that he jumped on the roof of his brother-in-law's car [~] denting it [~] to photograph the landscape. [Yahoo! News - Reader Ratings]

Monday, August 4, 2003
  10:05:53 AM  
Conference
The Finnish Museum of Photography will be hosting this conference as part of the project Safeguarding European Photographic Images for Access (SEPIA) funded under the European Union's Culture 2000 Programme.

The conference's aim will be to bring together a wide audience of professionals from archives, museums, libraries and the commercial sector who are responsible for management of photographic collections, and experts in photography and digital imaging. The focus will be on management of photographic collections, the possibilities for increasing access to the photographic heritage, and problems of preservation (of photographs as well as digital collections). The orientation of the conference will be towards application of new technology, with an emphasis on projects that have explored solutions for issues like scanning requirements, descriptions, searching and metadata, user requirements, inter-operability, digital asset management, financial and organizational aspects, exploitation of collections, copyright etc. The results of the SEPIA project will also be presented at the conference.

 

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