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  1. #11

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    Dear Sandy,

    Thank you for your reply. I picked that up from your article on UV printing lights. It didn't seem overly complicated to reposition the fixtures.

    Personally, I am a much better wood worker than I am electrician. I mentioned my approach to taking the unit apart for those who might be reluctant to build a light unit because of the wiring involved. The shop light plugs directly into the outlet, so the only wiring involved is to attach the ground to the metal reflecting plate. By taking the units apart, I saved the extra weight of the metal units.

    The fact that it is cheaper was a bonus.

    I bought the 48" unit because I am building a 48" unit. They would work equally well in a 24" unit, one would just have more wire curled in the top of the unit. If Commercial Electric makes a 24" unit, then that would be the way to go.

    Also, I want to thank you for the excellent article on UV light sources. I searched my books and the net for different articles. I found yours extremely helpful in guiding me on which type of light to build for my needs.

  2. #12

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    Did you ever try the bulb you were talking about? I have been looking at the H400BL, and the prices are really good at the sight you mention, but I wonder about the abilites of the bulb.

  3. #13
    juan's Avatar
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    I made a UV printer using 4 of the 15-watt versions of this bulb. Works fine for 8x10. I found my bulbs at the local outlet for lightbulbdepot.com

    juan

  4. #14

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    Quote Originally Posted by juan
    I made a UV printer using 4 of the 15-watt versions of this bulb. Works fine for 8x10. I found my bulbs at the local outlet for lightbulbdepot.com

    juan
    Juan, 15 watt versions of the coiled flourescent bulb?

  5. #15
    kudzma's Avatar
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    Sep 2002
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    I built a UV box with 12 20W spiral fluorescent BLB bulbs from Save on Lighting (see Sandy's link). My box has 12 bulbs (3x4) spaced 6" apart (from center of bulb) and 5" above the contact frame glass. It gives perfectly even lighting, easily covering 8x20" (my biggest format). Print times are nearly identical to a similar box with 8 F20T12/BL bulbs, which had a slight light falloff at the edges of 8x20. This was the reason for the rebuild. The screw in BLB bulbs are great! Bright, start instantly and warm up fast.

    Linas
    Linas Kudzma

  6. #16
    juan's Avatar
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    Sorry, yes, 15-watt versions of the coiled flourescent tube. I'm noticing a little fall off on the ends of my 8x10, so I'm thinking of getting two more - making a bank of 2 x 3 bulbs. I just screwed the bulbs into standard porcelain light fixtures from the hardware store - that spaces them about 2 1/2" apart. The tips of the bulbs are about 2" above the negative.
    juan

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