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  1. #11
    Bob Carnie's Avatar
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    I use them as well , at the lowest setting , I have no problem with them.

  2. #12
    David A. Goldfarb's Avatar
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    I like mine. I keep the flaps closed all the way in my space.

    If you are the sort of person who likes safelights off when focusing and enlarging, then it isn't a good choice, because of the ramp up time, and the current surge might not be so great for the enlarging timer. If you leave the safelight on all the time, this isn't an issue.

    p.s.: Thread title updated, despite my hatred of emoticons.
    flickr--http://www.flickr.com/photos/davidagoldfarb/
    Photography (not as up to date as the flickr site)--http://www.davidagoldfarb.com/photo
    Academic (Slavic and Comparative Literature)--http://www.davidagoldfarb.com

  3. #13

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    I've got a good one that needs the filters replaced. Can someone post a link to where they got the replacement material?

  4. #14
    ann
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    good point David, about turning it off. Every once in awhile I have a student hit the wrong light switch then they have to work in the dark for about 10 minutes as it cools down.
    http://www.aclancyphotography.com

  5. #15
    outwest's Avatar
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    To really do a safety test you have to first expose the paper to its threshold point where it will just show in development, THEN do the coin test. As a result, the shutters on my Thomas are closed and the side closest to the enlarger is 2/3 blocked. That made it completely safe for any normal amount of exposure time including burning. I did the test this way after John Sexton called them "Thomas paper burners" in a workshop.

  6. #16
    Newt_on_Swings's Avatar
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    The filters are really easy to replace once you find the gels, a search for the mentioned rosco gels or ruby lith on google will get you sources. You have to be careful about cleaning and disassembly of the glass plates which sandwich the filters. There are 4 of them which slide in, they are wrapped together on the edges with colored tape. Just peel back the tape carefully over a trashcan as sometimes the glass edges may have cracks and shards may break off as glass dust or specs. You can find vinyl colored tape at the dollar store that matches the color edges too, and just wrap everything together.

  7. #17
    Leigh B's Avatar
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    Quote Originally Posted by Newt_on_Swings View Post
    ...a search for the mentioned rosco gels or ruby lith...
    Rubylith is red. It will dramatically reduce the brightness of the monochromatic yellow sodium vapor lamp used in the Thomas Duplex.

    Not a good choice IM[-H]O.

    - Leigh
    “Wise men talk because they have something to say; fools, because they have to say something.” - Plato

  8. #18

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    Cool. Thanks for the tip. Should be easy to fix with the right filter gels.

  9. #19
    ParkerSmithPhoto's Avatar
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    Quote Originally Posted by Sundowner View Post
    I've got a good one that needs the filters replaced. Can someone post a link to where they got the replacement material?
    The best place to look would be a local video rental and sales store. Video guys use more Rosco gels than anyone else.

    What I did was slice the existing tape with a razor, and then soak the two glass pieces (per filter) in water. The old gels literally melt in water. Razor off any stuck stuff, wash with soap and dry. I put Rosco diffusion -- Rolux -- in each pane, so one diffusion gel and one layer of the #19 Fire.

    Tonight I flashed some paper to around a Zone VI level, and did another coin test with both MGWT and MGFB. With the unit wide open and the paper at 3 feet, I did start to see fogging at ten minutes on both papers. Even with both panes closed, there is plenty of light in the room, much more than the 15 watt units I was using before. It's nice to be able to see the clock!

    Incidentally, I wonder if some of the reports of fogging from these comes from the fact that the filters are some sort of gelatin. Why else would they melt in water? Could the company have used inferior filters? The Rosco gels are polycarbonate, and I've had some of these for 10 years that have never faded or cracked, unlike what I found in the Duplex: both the gel and the diffusion were paper thin, dry and brittle.
    Parker Smith Photography, Inc.
    Atlanta, GA

    Commercial & Fine Art Photography
    Portrait Photography

  10. #20
    ParkerSmithPhoto's Avatar
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    Quote Originally Posted by Leigh B View Post
    Rubylith is red. It will dramatically reduce the brightness of the monochromatic yellow sodium vapor lamp used in the Thomas Duplex.
    The Rosco #19 Fire is a very red gel, and despite that, the light that comes out of the unit is yellow all the way.
    Parker Smith Photography, Inc.
    Atlanta, GA

    Commercial & Fine Art Photography
    Portrait Photography

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