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Search: Posts Made By: JOReynolds
Forum: Darkroom 23rd March 2024, 09:17 PM
Replies: 1
Views: 132
Posted By JOReynolds
spiral history

There have been several manufacturers and brands of stainless-steel spirals. I have identified Nikor (USA), Kindermann, ProCo, Hewes among the early types, but which came first?
Forum: Monochrome printing techniques 3rd March 2024, 07:27 PM
Replies: 95
Views: 23,510
Posted By JOReynolds
There is no doubt that a contact print from a LF...

There is no doubt that a contact print from a LF negative is a thing of beauty. At college we had ancient contact boxes with lightbulbs at the bottom and an adjustable glass shelf onto which we were...
Forum: Darkroom 27th February 2024, 07:06 PM
Replies: 51
Views: 3,198
Posted By JOReynolds
Even if you don't take up my suggestion of the...

Even if you don't take up my suggestion of the dropper resistor, I ought to have added that the resistor should be rated at 5 watts or greater. Such resistors have stout lead wires that can be used...
Forum: Darkroom 27th February 2024, 01:53 PM
Replies: 51
Views: 3,198
Posted By JOReynolds
The quickest, cheapest and dirtiest way to get a...

The quickest, cheapest and dirtiest way to get a 120V synchronous motor to work on 240V is to connect a 7k5 resistor in series with the windings and make indicated 50 sec = 1 minute. The resistor...
Forum: Darkroom 27th February 2024, 11:59 AM
Replies: 51
Views: 3,198
Posted By JOReynolds
The device sold through ebay would do the trick...

The device sold through ebay would do the trick but would not be able to run the enlarger lamp. But four words of caution. First, the cost is £34.80 and shipping from Los Realejos, Spain, is a...
Forum: Darkroom 25th February 2024, 01:23 PM
Replies: 51
Views: 3,198
Posted By JOReynolds
Gralab timers were imported as Hauck Polychron,...

Gralab timers were imported as Hauck Polychron, presumably 230V 50Hz. Several advertised online.
Forum: Darkroom 24th February 2024, 03:57 PM
Replies: 51
Views: 3,198
Posted By JOReynolds
In the 90s the company for which I was working...

In the 90s the company for which I was working had a 115V 60Hz generator built to test equipment destined for the USA. It consisted of a precision 60Hz oscillator and a powerful (audio) amplifier,...
Forum: Top Tips 30th January 2024, 01:26 PM
Replies: 26
Views: 3,009
Posted By JOReynolds
You should not comment, in these pages or any...

You should not comment, in these pages or any other, on something you have obviously not viewed.
There has been a lot of unscientific chatter about the risk to film of high-power CT scanners. Ms...
Forum: Top Tips 28th January 2024, 10:36 PM
Replies: 26
Views: 3,009
Posted By JOReynolds
Lina Bessanova

Lina Bessanova is a Russian-born lecturer in Photography at the University of Florence, Italy.
I come from a photochemical engineering background and I am always glad to view her stuff. She produces...
Forum: Monochrome printing techniques 14th January 2024, 05:57 PM
Replies: 11
Views: 1,290
Posted By JOReynolds
Nicholas Lindan of Darkroom Automation published...

Nicholas Lindan of Darkroom Automation published a thorough paper on the oddities of Multigrade IV, said to have been rectified in MG V.
Forum: Photography in general 13th January 2024, 10:46 PM
Replies: 25
Views: 2,809
Posted By JOReynolds
I worked in Fribourg, Switzerland, on a...

I worked in Fribourg, Switzerland, on a roller-transport Kreonite machine for processing Cibachrome in process P3. The machine chassis was constructed of 304 stainless steel, the fastenings were of...
Forum: Monochrome Film 13th January 2024, 09:59 PM
Replies: 17
Views: 1,692
Posted By JOReynolds
sounds like Rodina. I use it with Ilford Delta...

sounds like Rodina. I use it with Ilford Delta 100. Superb!
Forum: Photography in general 25th December 2023, 09:18 PM
Replies: 25
Views: 2,809
Posted By JOReynolds
I worked with Ciba in Fribourg in the 80s, on a...

I worked with Ciba in Fribourg in the 80s, on a 42" wide roller-transport processor for the speeded-up P3 process. Increasing the speed and temperature was straightforward but drying was a headache....
Forum: Photography in general 22nd December 2023, 05:32 PM
Replies: 25
Views: 2,809
Posted By JOReynolds
Sulphuric acid fumes are sufficiently unpleasant...

Sulphuric acid fumes are sufficiently unpleasant to make sure exposure is minimised. But the nitrobenzenesulfonate sounds nasty - benzine was historically credited (debited?) with industrial diseases
Forum: Photography in general 20th December 2023, 07:02 PM
Replies: 41
Views: 5,827
Posted By JOReynolds
I have joined Reddit, which has sub-Reddit...

I have joined Reddit, which has sub-Reddit threads analog, analog community, darkroom and ItookAPicture (itap). Virtually all the contributors (posters) write of scanning their photographs and...
Forum: Cameras - medium format 19th December 2023, 04:39 PM
Replies: 30
Views: 9,069
Posted By JOReynolds
I glued some 300 grade wet and dry abrasive paper...

I glued some 300 grade wet and dry abrasive paper to the back of a 60cm steel rule, originally for cutting mounts. I got foam offcuts from a guy in the motion-picture optics business. The rule has...
Forum: Photography in general 19th December 2023, 04:26 PM
Replies: 25
Views: 2,809
Posted By JOReynolds
chemical risks

Last week, while driving, I heard a distressing story on Radio 4 of a 'fine art photographer' who had recently been diagnosed with advanced cancer, probably caused by exposure to 'Cibachrome bleach'....
Forum: Introductions 18th December 2023, 03:42 PM
Replies: 25
Views: 8,113
Posted By JOReynolds
bienvenue chez FADU

bienvenue chez FADU
Forum: Help! 4th December 2023, 01:47 PM
Replies: 20
Views: 11,309
Posted By JOReynolds
It was happening to me on orange.fr until I...

It was happening to me on orange.fr until I logged into Google, which has been remembering my passwords and inserting them whenever. My mrs tells me that facebook has been doing this for her, ever...
Forum: Photography in general 1st December 2023, 04:32 PM
Replies: 41
Views: 5,827
Posted By JOReynolds
It's here!

Harman announce their new ISO 200 colour negative film, Phoenix 200.
Forum: Introductions 20th November 2023, 09:04 PM
Replies: 23
Views: 2,537
Posted By JOReynolds
I was hoping that FADU would come to my rescue...

I was hoping that FADU would come to my rescue and tell me!
Forum: Introductions 19th November 2023, 06:41 PM
Replies: 23
Views: 2,537
Posted By JOReynolds
On B&W it didn't seem to make much difference...

On B&W it didn't seem to make much difference when I ran tests 60 years ago. In fact the sharpest lens in the test was a 3 1/4" TTH Ental, a Tessar- type 4-element objective. But it showed fringing...
Forum: Darkroom 12th November 2023, 08:05 PM
Replies: 5
Views: 1,834
Posted By JOReynolds
There is a significant demand for columns among...

There is a significant demand for columns among photographers converting negatives and slides into digital files using DSLR cameras, macro lenses and bellows. Also, many owners of the Intrepid...
Forum: Auctions of Interest 2nd November 2023, 03:11 PM
Replies: 3
Views: 8,464
Posted By JOReynolds
It's arrived

The monochrome Nova looks as though it will do the job nicely. But there was a surprise! It came with three books - of US origin, so short on Ilford products:
- The darkroom handbook by Michael...
Forum: Sale or Wanted 1st November 2023, 01:55 PM
Replies: 0
Views: 5,249
Posted By JOReynolds
120 spirals

I have more 120 spirals than I need and I am short of storage space. They are unbranded and probably not as nicely-finished as Hewes, Kindermann or Nikor, but I have used them all and they work fine....
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