Dissecting needle from optical fiber

Jim Sloan jsloan at u.washington.edu
Wed Feb 9 00:29:30 EST 1994


In article <2j8u5a$hka at apakabar.cc.columbia.edu>,
Daniel Zabetakis <dan at cubmol.bio.columbia.edu> wrote:
>
>    Does anyone have experience in making dissecting needles from optical
>fiber? We've been doing it for a while, and when you get a good needle it
>works fine. But it is very difficult to get a good needle. The tip of the
>fiber almost always shatters when cut with a razor blade.
>  Does anyone have a favourite technique that gives a better yield?
>
>DanZ

I have made dissecting needles from optical fiber.  When I went to make 
my first needles, I was told to cut the fiber with a razor blade on a 
hard surface, like a glass slide.  But I found that the ends were always 
ragged.  Then I tried cutting the fiber on a painted wooden surface, and 
the ends came out perfect nearly every time.  I think that the surface 
needs to have a bit of give.

Good luck!
Jim


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