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This is cool as hell! I hope your PhD continues well, and that this invention serves you in the future.

Do you put any lube on the interface between the silicone sleeve and optical cable? I imagine the bending action will cause displacement, and friction there could rub and/or cause the nominal position to shift around.

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Since the sleeve is a stretchy rubber as long as the inner diameter of it is a bit smaller than the outer diameter of the fiber it holds just fine. For more dynamic applications, though, a silicone adhesive, or even super glue for more permanent strands, helps!

Oh cool, that kind of robustness is not what I was expecting. Very cool project!

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