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Thread: Edge Lighting question

  1. #1
    Join Date
    Nov 2013
    Location
    Big Rapids, MI
    Posts
    6

    Default Edge Lighting question

    When you use LED edge lighting, are you grooving the edge of the plexi? Do you polish the edge? I am looking for the best light transmission I can get and if someone has already did the experiments to figure out the best way, I would like to hear your results.

  2. #2
    Join Date
    Jan 2004
    Location
    Norman, Ok
    Posts
    3,251

    Default

    Brian,

    You might search on the SB Forum on the method I used to make this set of letters.
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  3. #3
    Join Date
    Jun 2011
    Location
    Melbourne, Australia
    Posts
    1,010

    Default

    Brian its really super easy to edge light. Just flame polish the edge using Map Gas. Don't be frightened by the 3,600F temperature warning on the bottle. The trick is to keep moving. Sawn edges come up great. Lots of demos on U-Tube.
    Buddy BT48 with 6' power stick
    2.2 HSD Spindle
    Aspire 9.5
    6" ShopBot Indexer

  4. #4
    Join Date
    Apr 2011
    Location
    Stamford, NY
    Posts
    556

    Default

    Yes, Polish the edge that receives the LED.
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    I don't always indulge in evil scientific research...but when i do. I make the parts on a ShopBot.

  5. #5
    Join Date
    Apr 2013
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    Kennebunkport, Maine
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    4,212

    Default

    Randy, any more info about that pic? Has anybody ever laminated and carved old cd's and carved and lit?
    Scott P.
    2013 Desktop/spindle/VCP 10
    Maine

  6. #6
    Join Date
    Jan 2004
    Location
    Norman, Ok
    Posts
    3,251

    Default

    Naw, I'm telling everyone the idea of flaming, or torching the edge of plex isn't right. The way it's done by ALL Plexiglas manufacturers I've visited is by buffing.

    You start out with 240p going down to 600p. From there it's a quick buff with your soft rotary pad.

    I'd like to see everyone to pull out a torch and ruin some plex in order to find out how it doesn't work. That's a Tin Horn trick used on newbees.

  7. #7
    Join Date
    Jun 2004
    Location
    Springfield Mo
    Posts
    820

    Default edges

    I guess I will agree with the fellow with 2,252 posts...
    The decimal point seems to be the most important on the z axis... x & y not so much....
    ShopBot... Where even the scraps and things you mess up and throw away are cool....

  8. #8
    Join Date
    Apr 2011
    Location
    Stamford, NY
    Posts
    556

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    [QUOTE=scottp55;158406]Randy, any more info about that pic? Has anybody ever laminated and carved old cd's and carved and lit?[/QUOTE

    The sign was 4ft x 12 ft approx 1" thick polycast acrylic internally lit by LED strips. There was a 1/8" thick maple veneer applied with black silicone as an adhesive. There's a special treatment we used when i worked there to "stabilize" the veneer and i am still bound to keep my mouth shut about it, Heh.
    I don't always indulge in evil scientific research...but when i do. I make the parts on a ShopBot.

  9. #9
    Join Date
    Apr 2011
    Location
    Stamford, NY
    Posts
    556

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    More acrylic and LED work i've been doing at my current place of employment.
    Attached Images Attached Images
    I don't always indulge in evil scientific research...but when i do. I make the parts on a ShopBot.

  10. #10
    Join Date
    Apr 2013
    Location
    Kennebunkport, Maine
    Posts
    4,212

    Default

    Thanks Randy, the visual effect was throwing me.
    Scott P.
    2013 Desktop/spindle/VCP 10
    Maine

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