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[quote user="scubaterry"]   I have plenty of 2, 3 and 5 mm LEDs that I plan on using.  [/quote] Terry, this sounds interesting.  I have yet to try fibre optics, but I have been researching LEDs for some time now. You might want to consider some surface mount (SMD) LEDs or another type in place of the regular ones.  The difference is that some configurations of LEDs like SMDs have a much greater viewing angle (they incorporate reflectors in some cases).  A regular can have a viewing angle of only 30 to 60 degrees, meaning you would have to bring the ends of your fibre bundle to nearly a dead center spot in front of the your regular LED.  With  SMDs, which have viewing angles of 120 or better, I am guessing you could "center" the LED and bring various strands up to it from different positions, almost sideways, and still pick up the full beam. I dunno, this just might be easier in some instances, than trying needing to arrange the fibres in a "dead on" bundle. Below is a link to a site with info about LEDs in general, and to a vendor of various types.  I should say I have never used this vendor....I include it just for info.  You would want to double check about the viewing angle of any you were going to buy though. <A href="http://www.kpsec.freeuk.com/components/led.htm">http://www.kpsec.freeuk.com/components/led.htm</A> <A href="http://www.lc-led.com/ecommerce4.html">http://www.lc-led.com/ecommerce4.html</A> [2c]
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