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  #11  
Old 29th January 2013, 12:38 PM
Alan Clark Alan Clark is offline
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I use a heater tray/matt that is designed for home brewers to stand gallon bottles of fermenting wine on, to speed the fermenting process up. So it is designed to cope with spilled liquids. Not an expensive item. No thermostat, but I insulate it with a folded newspaper....

Alan
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  #12  
Old 29th January 2013, 03:45 PM
Mike O'Pray Mike O'Pray is online now
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35C is OK for RA4 printing so unless your trays are needed for colour neg sheet film developing then I'd have thought 35C is OK. Actually RA4 in some kits( Kodak for one at least) can be done at room temp of around 20C and the Tetenal film kit claims developing can be done at I think 30C

There may be good reasons why you need 40C of course but just a thought on my part

Mike
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  #13  
Old 29th January 2013, 05:29 PM
Peter S Peter S is offline
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Quote:
Originally Posted by John King View Post
At a push you could always make one! I did when I started out when I was 15 and could not afford a proper heater. I used a metal biscuit tin, a light fitting similar to those in ceiling lights and a light bulb (15w pygmy) properly earthed. If you can get a square one or preferably two, take one side out of each and join them together with metal strips and 2BA nuts and bolts to make an oblong then use 2 15w light bulbs.

I kid you not, these work and work very well and do not get over heated.
I had one of these about 45 years ago, it was given to me by an electrician friend who was giving up photography.
This one had the benefit of a thermostat from a cooker wired in, well he was a service electrician with SEEB, fitting and repairing cookers.
Peter
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  #14  
Old 29th January 2013, 08:44 PM
John King John King is offline
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This one had the benefit of a thermostat from a cooker wired in, well he was a service electrician with SEEB, fitting and repairing cookers.

You were posh! I bet you had central heating and a bedroom all to yourself as well
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  #15  
Old 30th January 2013, 04:45 PM
Peter S Peter S is offline
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Quote:
Originally Posted by John King View Post
This one had the benefit of a thermostat from a cooker wired in, well he was a service electrician with SEEB, fitting and repairing cookers.

You were posh! I bet you had central heating and a bedroom all to yourself as well
Not at all John, I was a lot younger then and married.
Peter
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  #16  
Old 30th January 2013, 11:16 PM
MarkWalker MarkWalker is offline
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Thanks, Alan Clark, there's a home brew shop nearby that I have had a few bits and pieces from, I'll ask them.
Regards, Mark.
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  #17  
Old 31st January 2013, 01:30 PM
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Phil Phil is offline
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Can I be contentious and say I've never had a need for dish warmers at all. Chemistry is at constant darkroom temps and I've never had a problem. Even developing sheet film, I mix develoer to its temperature and go from there.
But then again my darkroom is a stone-flagged 'cellar' so tends to be proper 'pub' temperature!
Phil
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  #18  
Old 31st January 2013, 08:16 PM
MarkWalker MarkWalker is offline
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Well, Phil, yes, I manage without but I'm doing some extended print runs archiving a customers collection on fibre paper, so I tried my dishwarmer (and it failed) because it makes life easier managing the developer temperature when ambient is 15C and the bench is cold. I find fibre paper to be more temperature sensitive in developer than RC for some reason. Agree that a dishwarmer isn't necessary - and I hardly ever use one - but it can be useful at times like this when I want to process batches as consistently as I can - I won't go into wash temperatures and how I manage that.
Regards, Mark
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