Hi Tom, This is an old post in my gallery that might be of use:}

I wanted to share this with all the photographers here at Renderosity.
I really didn't want to spend $300 plus dollars on a flash ring, so I tried a
lot of different ways to light my macro shots. I used white board, mirrors, and
hand holding my flash with various poor results not to mention the time
involved in setting up the shot. Then it came to me fiber optics. This is my
first proto type with very inexpensive cable, and the results are fantastic.
All for a total investment of $11.40! I will be happy to go into detail about
the construction, and materials with anyone who needs help, just send me a
message. My next few posts will be examples of how well it works. In
cooperation, jim