1. Join Now

    AVForums.com uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

How to make a glass edge glow

Discussion in 'Smart Home, Climate Control & Security Forum' started by tehn, Dec 9, 2004.

  1. tehn

    tehn
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    Hi. My AV cabinet has 3 x 5mm glass shelves and I would like to make the front edge of them glow when the lights are off for projector viewing. I've tried taping a thin CCFL tube to the back of one but it was too bright and it caused multiple lines of light to shine along a side wall. Interesting effect, but not what I'm after! :cool: I also tried a couple of bright LEDs on the back edge, but they only came through as two small points of light on the front.

    The glass edges all around are just a flat polish, with small bevels.

    Any suggestions? Thanks, Niall.
     
  2. digisocialist

    digisocialist
    Standard Member

    Joined:
    Sep 5, 2004
    Messages:
    477
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    18
    Location:
    Yorkshire
    Ratings:
    +2
    Interesting. No idea really. Sounds like a review of GCSE Physics could be called for here. You may need to achieve TIR (Total Internal Refraction) to keep the light within the glass i.e. when the light ray tries to leave the glass to air at an angle greater than the critical angle (42 degrees from air to glass) it should refract back in like a mirror. When i (the angle of incoming light in relation to the normal) is equal to the critical angle (the angle at which it leaves the glass i.e. 42 degrees) then the light should touch the surface. Other factors like colour can come into play too... I think.

    I'd just use a lamp ;)
     
  3. john59

    john59
    Active Member

    Joined:
    Aug 27, 2004
    Messages:
    390
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    21
    Location:
    Wigan
    Ratings:
    +20
    I think you have to diffuse the light source somehow, I seem to remember seeing this in a gadget shop somewhere a while back (not for sale but being used has a display) sorry I can't help anymore :confused:
     
  4. avanzato

    avanzato
    Active Member

    Joined:
    Jan 21, 2003
    Messages:
    1,881
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    51
    Location:
    Norfolk
    Ratings:
    +61
    Try painting some of that glass 'frosting' paint on the edges you want to glow. It should diffuse the light enough, though an experiment on something other than the table first would be a good idea.
     
  5. Mango Bob

    Mango Bob
    Standard Member

    Joined:
    Jan 12, 2004
    Messages:
    513
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    16
    Location:
    London
    Ratings:
    +0
    Has anyone tried using the long thin cold cathode lights people use for the inside of PCs? Would this work?

    edit: Forget that...just re-read the first post!
     
  6. Mose

    Mose
    Active Member

    Joined:
    Dec 1, 2004
    Messages:
    1,629
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    66
    Location:
    Aldershot
    Ratings:
    +149
    I was in Alders the other day and noticed that they had this effect on several of their glass shelve displays. I asked one of the sales geezers there where I could get them from but he wouldnt tell me! This was in a lilac colour flourecent light. Very effective. I want one too!
     
  7. SteveRSF

    SteveRSF
    Standard Member

    Joined:
    Nov 10, 2003
    Messages:
    265
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    21
    Ratings:
    +2
    Nice idea.only thing is cold cathode tubes from pc's are 12v.........what about el wire you can use for around dashboards etc. some of these have a battery pack using 2 aa batteries...not very bright but may be enough for what you want! :thumbsup:
     
  8. doink

    doink
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    It's a peice of p***, just buy a "Touchlight" from stands Unique, it's designed to do the job!
     
  9. strider-nje

    strider-nje
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
  10. duke748

    duke748
    Member

    Joined:
    Dec 19, 2002
    Messages:
    526
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    31
    Location:
    Mid Sussex
    Ratings:
    +29
  11. tehn

    tehn
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    Thanks everyone for your suggestions. Yes, the glass shelves in Lydecker's setup are just what I'm trying to achieve. He's used a CC neon tube, so I'll try mine again. It may be the front shape of my glass that is causing the problems, so I may also look at frosting the front edge of the glass as suggested.

    Otherwise, I'll try some EL wire which isn't as bright.

    I'll post a pic if I'm successful. Cheers, Niall.
     

Share This Page

Loading...