3 ms·

The suspension (supports) should not be visible if it has the same index of refraction.

• fellerts 1y ago
  Yep, nylon and epoxy resin have similar indices of refraction, but it's not perfect. I tried casting thin rods out of epoxy to replace the nylon but failed to achieve a good result.
  • buserror 1y ago
    Have you tried Fluorocarbon? this has replaced Nylon for many fishing use (fly fishing in any case), it has a different refraction index -- not sure if it would be closer, or further from the resin, but at least it is different! :-)
    • fellerts 1y ago
      Never tried, because fluorocarbon's index of refraction (1.42-ish) is further from epoxy resin (1.50-1.57) than nylon (1.53). It does make sense that fluorocarbon has replaced nylon because it's going to be less visible in water (1.33). I guess the epoxy's index of refraction depends on all kinds of factors such as the mixing ratio and the conditions under which it cures.
  • discobean 1y ago
    Couldn't you make little sticks with the same epoxy resin to hold up all the parts?
    • fellerts 1y ago
      I tried, but they're very difficult to cast. Epoxy resin is also very brittle and difficult to cut neat and square. A jagged edge does not bond very well to a smooth surface.