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  1. #1
    mtbr member
    Reputation: rjpstoked's Avatar
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    acrylic polish for lenses?

    Is there any way to polish lenses from scratches from use and building homemade lights?
    Also does silicone glues have conductive properties? Hang testing the light worked perfect. upon assembly..nothing...Nflex kaput. Used glue to isolate board. Prior to assembly. That or a bad solder on led side?

    Thanks
    Rob

  2. #2
    Spanish biker
    Reputation: msxtr's Avatar
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    Quote Originally Posted by rjpstoked
    Is there any way to polish lenses from scratches from use and building homemade lights?
    Also does silicone glues have conductive properties? Hang testing the light worked perfect. upon assembly..nothing...Nflex kaput. Used glue to isolate board. Prior to assembly. That or a bad solder on led side?

    Thanks
    Rob
    Hi, hmmmmmmm, You can use toothpaste to polish the scratches, this work well.

    About the conductive silicon, I don't have any idea If you would said that solder the led with inverse polarity you had damaged the led, not the nflex.

    Greetings - Saludos

    msxtr
    Warning!!! my english is very very bad, sorry.

    Easy DIY led light1
    Easy DIY led light2

    The Beast!!!

  3. #3
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    Better to use higher and higher grades of sandpaper (I mean 1000, 1200, 1500, 2000), wetsanding with a block (eraser, or something solid as you move up the grit numbers).

    After that, you can get a really good hand-polish with Simichrome Polish, available in either most Harley Shops or antique stores (The irony is pretty heavy on that, eh?). Dab a little on an old T-shirt, work it into your lens, and buff it out with the dry part of the t-shirt as you would polish a shoe. It'll get you 95% of the way to crystal.

  4. #4
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    I've had good luck with the Novus polishes for clear plastics but not sure if it is compatible with acrylic. I imagine it is.

    There are conductive epoxies on the market. I've used some in the past when we wre building PEMFC's but its been awhile so I can't recall any brand names. Check on Goog.

  5. #5
    Gone riding
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    Personally I have had limited success trying to polish lenses, but I would definitely suggest a nice flat piece of glass, plenty of water and carefully working your way through the grades of paper until you move on to a polishing compound. I donít notice most scratches, and I usually find it easier just to replace the whole lens if a scratch is bad enough to be noticeable.

    For optics some people use water, but I clean them with isopropyl alcohol. Itís about the only stuff I can find that does a good job without leaving residue. Itís safe to use on those pesky gummy domes on a lot of emitters too.

    Regarding the nFlex, it is extremely sensitive to resistance or capacitance across the pins. You really do need to make sure that the compound you use for potting is not conductive or capacitive.

    As far as the connection of the nFlex to the LED, it is possible that the output capacitor on the board could be damaged if powered with no load, and reverse polarity wouldnít be real good for it either. Check things over and you may be lucky.

    Dave.

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