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Old Sep 21, 2009, 04:51 PM
Cheif Bottlewasher
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Canada, NS, Sydney Mines
Joined Sep 2005
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I got to wondering ..

If a guy took a glob of glue from a hot glue gun ..and fused it to the end of a fiber optic light strand ..would that glue glow like a regular light.. 360(degree) ..say about 3-5mm dia..

Im not looking for illumination ..just so it looks like a light is on..does that make sense
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Old Sep 22, 2009, 07:37 AM
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I sorta melted some to gether with a heat gun it did work it was dim and I burnt my fingers. I think you could do that but I really dont know
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Old Sep 22, 2009, 09:40 AM
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When those "mares tail" lamps were new (late '70's) and you could get samples of fibre optic, a mate of mine made a control panel for his model railway. It was made as a mimic diagram and he wanted his routes to light up. The answer was A LOT of 1mm holes in the perspex front panel with a fibre in each one. The illuminated ends were bunched to their bulbs and that end heated and tamped flat to maximise the area for light input. The other end was heat treated to form a blob, partly to make that end show a larger light, partly to stop it falling back through the hole.
It all worked very well.
Your idea of hot melt glue should be OK, just remember that the light out is proportional to light in, but as you just want the light to show rather than illuminate, there is a chance of a good result.
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Old Sep 22, 2009, 10:22 AM
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Olympia WA
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I just tried making a bulb on the end of a fiberoptic with superglue but it didn't light up the bulb, maybe because it was clear. Not in the shop to try the heat glue gun but it might work because it is not clear. Nice look looking straight into the fiberoptic with the superglue forming a ring around the fiber. Jerryj98501
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Old Sep 22, 2009, 04:16 PM
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You could try a small bead of epoxy. I use an optically clear epoxy for fiber optic terminations in glands... it should be easier to shape, also.
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Old Sep 22, 2009, 07:34 PM
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I have never tried it, but I think it will work.

Try chamfering the end of the FO cable with fine sand paper. And leave a dull/matt finish. I other words don't wory that it is not polished.

If the light is too white then try dipping the end in paint, without primer. A thin layer of paint is still translucent.
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Old Sep 23, 2009, 09:46 AM
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Make a full taper on the end of the fiber, like sharpening a pencil. The angled surface will light up and be visible 360 degrees. If the rod is cut flat, the light will be coming out the end like a flashlight.

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Old Sep 23, 2009, 11:12 AM
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If using plastic fiber, you can mushroom the end by heating it with a lighter or candle. I haven't tried it using glass fiber yet.
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