Support our Sponsors, they keep FADU free: AG Photographic The Imaging Warehouse Process Supplies RH Designs Second-hand Darkroom Supplies |
> Developing Sheet Film in a Paterson Orbital Processor |
*** Click here for the FADU 2015/2014 Yearbooks *** |
|
Article Tools | Search this Article | Display Modes |
Published by Trevor Crone
21st February 2011 |
|||||||
|
|||||||
|
|||||||
|
#2
By
Neil Smith
on
22nd February 2011, 10:22 AM
|
Thanks Trevor excellent article it will be useful to myself and I am sure many others, thanks very much it is appreciated.
Neil |
#3
By
vanannan
on
22nd February 2011, 07:05 PM
|
Hi Trevor
Thanks for the interesting and helpful article, just curious as to how you control the processing temperature, I float my orbital in a large washing up bowl full of tempered water, this also makes the agitation very smooth only needing to lightly touch the sides and corners. |
#4
By
Trevor Crone
on
22nd February 2011, 07:46 PM
|
|
Quote:
|
|
#5
By
SteveW
on
23rd February 2011, 08:10 PM
|
Hi Trevor
I have a vague recollection of an article in the long gone and much missed Darkroom magazine from Ed Buziak regarding the use of the orbital. if I remember correctly he took a Dremel and roughed up the base with a grinder. I will have to try and dig it out. |
#6
By
Dave miller
on
24th February 2011, 07:16 AM
|
|
Quote:
|
|
#7
By
Alan Clark
on
24th February 2011, 08:35 AM
|
I think the question of what you do to the base of the processor is quite a complex one. I glued cocktail sticks to the base of mine (flat, not sticking up!) and this worked very well with 5 x 4 and 10 x 8 film. But when I started developing 5 x 7 film I was getting lines of overdevelopment across the negative. At first I thought these were caused by the fins then I realised they lined up with the cocktail sticks. Removing the cocktail sticks and scoring the base with a knife has cured the problem. I have no idea why these lines of overdevelopment occured, as the film had its emulsion side up.
Why should different film sizes make a difference? all I can think is that because of the curved base of the processor each size sits in a different relation to the curve of the base. 5 x 7 film sheets also have more room for side-to -side movement than the other sizes. The main thing is that scored lines in the base, about 5mm apart, in two directions, making a diamond parrern, seems to have done the trick. Alan |
#8
By
Michael
on
24th February 2011, 10:26 PM
|
Back in the middle of '09 I posted pictures of a couple of removeable mats I made - see here. They do me fine, with just the occasional trace of AH left on the outer corner of the odd sheet from time to time - which washes off in a quick rinse under the tap.
So my one processor can be used for either film or paper. |
#9
By
Neil Smith
on
4th March 2011, 10:41 AM
|
Trevor I processed in the Paterson Orbital using your method for the final tests for the Fomapan, worked a treat, processing was perfect with the fins attached. I used the self adhesive clear plastic domes you suggested on the base, brilliant.
So simple and economical it was easy using your method, thanks Neil |
Support our Sponsors, they keep FADU free: AG Photographic The Imaging Warehouse Process Supplies RH Designs Second-hand Darkroom Supplies |
Article Tools | Search this Article |
Display Modes | |
|
|
Similar Threads | ||||
Article | Article Starter | Category | Comments | Last Post |
Paterson Orbital processor revisited | Michael | Monochrome Film | 44 | 3rd September 2023 03:30 PM |
4x5 Sheet-Film Holders For Paterson Tanks. | Keith Tapscott. | Darkroom | 19 | 2nd January 2011 01:32 PM |
FS Paterson Orbital processor and motor | John51 | Sale or Wanted | 5 | 7th May 2009 06:23 PM |
Modifying A Paterson Orbital Processor | Dave miller | Articles | 11 | 1st January 2009 10:14 AM |
Paterson Orbital Processor | Dave miller | Monochrome Film | 4 | 17th September 2008 11:18 AM |