Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 70,968   Posts: 1,558,495   Online: 1089
      
Page 1 of 2 12 LastLast
Results 1 to 10 of 14
  1. #1
    Robert Hall's Avatar
    Join Date
    Aug 2004
    Location
    Lehi, Utah
    Shooter
    ULarge Format
    Posts
    2,040
    Images
    28

    Tray heaters anyone? Or how to hot lith.

    I have been looking for years for a decent tray heater. I bought one years ago from Nova. The guy told me it was the last one and it was 220v. I was lucky because I have 220 for my light sources in my darkroom but it was also about $200. ( yeah, back when I was more easily parted with my money ).

    Well, I seem to be the Salt Lake City repository for old darkroom stuff and a batch came my way the other day with what I thought was a tray warmer. it was older than I am, that's pretty old, and gave it a try. it heated to 125f and did a great job of heating my developer for doing hot lith prints.

    I started doing a web search and found that submersible heating pads only turned up junk for turtles, not what I was looking for. Then I looked closely at the pad I was given and found it was a mat. It's a heated floor mat for standing on cold cement floors.

    Now this was hardly submersible, but boy, did it do a great job of heating my soup. Now... forewarning: In no way did this say it was submersible, but one claim said it was waterproof. So if somehow you end up electrocuting yourself, don't blame me. I do stupid things all the time.

    So consider this link a suggestion: http://goo.gl/j8H3b

    Anyone else thought of this or a better solution for our solution?
    Robert Hall
    www.RobertHall.com
    www.RobertHall.com/mobile
    Apug Portfolio
    Facebook Profile


    Technology is not a panacea. It alone will not move your art forward. Only through developing your own aesthetic - free from the tools that create it - can you find new dimension to your work.

  2. #2
    Andrew Moxom's Avatar
    Join Date
    Feb 2007
    Location
    Keeping the British end up in Minnesota
    Shooter
    Multi Format
    Posts
    4,871
    Images
    333
    There were some threads opened on this a few years ago....http://www.farmtek.com/farm/supplies...;pg106120.html I wouldn't use these actually in your tray, but underneath would work well. they can be thermostatically controlled so that you can heat the trays from the outside and keep your lith developer at the right temperature.
    Please check out my website www.amoxomphotography.com and APUG Portfolio .....

  3. #3
    Bob Carnie's Avatar
    Join Date
    Apr 2004
    Location
    Toronto-Ontario
    Shooter
    Med. Format RF
    Posts
    4,676
    Images
    14
    I bought one of those pig warmers, I could not get it to give me adjustable temps and abandoned the idea. Murray M came up with the original post on this one.
    Quote Originally Posted by Andrew Moxom View Post
    There were some threads opened on this a few years ago....http://www.farmtek.com/farm/supplies...;pg106120.html I wouldn't use these actually in your tray, but underneath would work well. they can be thermostatically controlled so that you can heat the trays from the outside and keep your lith developer at the right temperature.

  4. #4
    Robert Hall's Avatar
    Join Date
    Aug 2004
    Location
    Lehi, Utah
    Shooter
    ULarge Format
    Posts
    2,040
    Images
    28
    Thanks Andrew, I remember these now. I don't see a stock item or price on them however. Do you think they are no longer available?

    Have you used them?
    Robert Hall
    www.RobertHall.com
    www.RobertHall.com/mobile
    Apug Portfolio
    Facebook Profile


    Technology is not a panacea. It alone will not move your art forward. Only through developing your own aesthetic - free from the tools that create it - can you find new dimension to your work.

  5. #5
    Robert Hall's Avatar
    Join Date
    Aug 2004
    Location
    Lehi, Utah
    Shooter
    ULarge Format
    Posts
    2,040
    Images
    28
    Thanks Bob,

    Good to know. I can tell you I sure like this mat I found. At least so far.

    I hope things are well your way.
    Robert Hall
    www.RobertHall.com
    www.RobertHall.com/mobile
    Apug Portfolio
    Facebook Profile


    Technology is not a panacea. It alone will not move your art forward. Only through developing your own aesthetic - free from the tools that create it - can you find new dimension to your work.

  6. #6
    Robert Hall's Avatar
    Join Date
    Aug 2004
    Location
    Lehi, Utah
    Shooter
    ULarge Format
    Posts
    2,040
    Images
    28
    Quote Originally Posted by Bob Carnie View Post
    I bought one of those pig warmers, I could not get it to give me adjustable temps and abandoned the idea. Murray M came up with the original post on this one.
    This, btw Bob, would work with a light dimmer switch. Man... I'm brilliant today!
    Robert Hall
    www.RobertHall.com
    www.RobertHall.com/mobile
    Apug Portfolio
    Facebook Profile


    Technology is not a panacea. It alone will not move your art forward. Only through developing your own aesthetic - free from the tools that create it - can you find new dimension to your work.

  7. #7

    Join Date
    Mar 2006
    Location
    Southern Ontario-ish
    Shooter
    Multi Format
    Posts
    531
    Depending on what temperatures you're trying to reach, I used to use a heater that basically looked like a long U that was submersible and had an adjustable thermostat. It had a minimum temp so I didn't use it much but it was great for heating Tmax dev to 100° for processing 3200 T Max. Will probably use it this winter to help keep my water bath at a steady temperature while printing. Can look it up later when I get home.

  8. #8
    Mike Wilde's Avatar
    Join Date
    Aug 2006
    Location
    Misissauaga Canada
    Shooter
    Multi Format
    Posts
    2,939
    Images
    29
    I use a wierd combo when I need a hot tray. Made this up doing c-41 8x10 negs re-shooting a dupe of a collage of hundreds of small photos using a process camera.

    No film holder for that camera, just a vaccuum back holder, so setting it up to work in total darkness was actually the bigger part of the problem with the project.

    The tray was a food service stainless tray. It sat on top of a water bed heater. The temp sensor for that heater sat with a bag of ice on top of it to make it run to hotter than normal.

    The heater sat on top of a piece of drywall to even the heat out. The foam pad to drive the heat up sat on the drywall. The drywall was cut away in places like where the power cord connectd to allow the pad to lay flat under the tray. Definitely flaky, but the end result was satisfactory for that project.

    Since then I have removed the bed thermostat and occasionally put such a heater in my darkroom sink, but then laid a heavy plastic liner in the sink, since this heater is not rated for immersion. thus, filled to 2" with water works great for getting all trays to the same temp, but is a pain to take down; you have to bail the water bath since the sink drain is covered.

    It is most handy when I have a backlog of 4x5 e-6's to process. My tanks are hard rubber, and without thier own water jacket. I keep most of the e-6 chems in them with floating lids, and then microwave them to get things up to temp, and the water bath keeps them at that temp.
    my real name, imagine that.

  9. #9
    Robert Hall's Avatar
    Join Date
    Aug 2004
    Location
    Lehi, Utah
    Shooter
    ULarge Format
    Posts
    2,040
    Images
    28
    I guess we are hearing from our friends to the north, who else would know so much about needing to heat the soup. I bow to your experience!

    (thanks!)

    Robert Hall
    www.RobertHall.com
    www.RobertHall.com/mobile
    Apug Portfolio
    Facebook Profile


    Technology is not a panacea. It alone will not move your art forward. Only through developing your own aesthetic - free from the tools that create it - can you find new dimension to your work.

  10. #10
    MaximusM3's Avatar
    Join Date
    Jul 2010
    Location
    NY
    Shooter
    35mm RF
    Posts
    756
    Images
    7
    Bought this two years ago and works fine with 11x14 trays. At the minimum setting, keeps lith developer at about 100 degrees, which is what I use. http://www.amazon.com/Cuisinart-CWT-...21302875&sr=8-

Page 1 of 2 12 LastLast


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin