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  1. #1
    Premium Member
    b_turner's Avatar


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    Apr 2003
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    Default NuArc light table as exposure unit

    Over the weekend I acquired one of those old NuArc light tables - the really nice ones with the hammered-finish steel casing. It's roughly 24" x 30", about 8" deep, and has one of those U-shaped flourescent tubes inside.

    I already have a nice large light table, but my first thought about this thing was to try to use it as an exposure unit.

    Is anyone here familiar enough with these to know if it will effectively work for exposing screens without having to retro-fit it with different bulbs? I'm not used to exposing with flourescents... the glass top on this has the transparent lucite under the glass to diffuse the light, and the bulb is approx. 2" below the glass...

    you guys think it might work as-is?
    we are cricket press
    -->

  2. #2
    Casey Burns's Avatar

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    Jun 2002
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    New York, Portland, Carrboro
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    Default Re: NuArc light table as exposure unit

    Quote Originally Posted by b_turner
    Over the weekend I acquired one of those old NuArc light tables - the really nice ones with the hammered-finish steel casing. It's roughly 24" x 30", about 8" deep, and has one of those U-shaped flourescent tubes inside.

    I already have a nice large light table, but my first thought about this thing was to try to use it as an exposure unit.

    Is anyone here familiar enough with these to know if it will effectively work for exposing screens without having to retro-fit it with different bulbs? I'm not used to exposing with flourescents... the glass top on this has the transparent lucite under the glass to diffuse the light, and the bulb is approx. 2" below the glass...

    you guys think it might work as-is?
    i use regular 40 watt fluorescents and expose with four of them in nine minutes.
    my only concern with your new table is that there might be too much distance between the parts of the bulb to get an even exposure.

  3. #3
    loco's Avatar

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    Feb 2004
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    Default

    Try and get a hold of NuArk and see what kind of light source it is. The serial number should be on it somewhere. I have a offset plate burner for burning offset printing plates for my exposure unit. The way mine is designed the light source is on top and and the light shoots downward. the unit is only made to put thin plates and negitives. I just put a 4" or so pad that I place my screen on top of the pad with sgueegee side of screen against pad. Then I have positive taped to back of screen. I place a thick heavy glass on top that pushes screen and film together tight then i expose screen. I works just fine. My unit is 5000 watt that can kick down to 2500 watts. I shoot my screens for 30 sec. on high and 1 min. on low
    The more watts the better when you want to shoot fine lines or halftones
    I'm not sure if yours is a flip top or if light source comes from the bottom
    As long as the light works and you have a way to keep positive tight against screen. even if you have to take it apart to make it work. just make it work that's what I did.

    LOCO

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