Back to the bench
Late to the party and what a neat project!
Don't know if this would help but these showed up on a search...
https://www.ebay.com/itm/400979383636
I am guessing at "pea size", it taxes my pea brain. These would have a pre-drilled hole that one of the micro LEDs might fit in, maybe secured with some UV cure acrylic cement. Perhaps the frosted finish might diffuse light effectively. I suspect other sizes are available as well. They showed up using "round clear acrylic beads" as a search term.A global search you might say (or not).
Sorry for the spam if this is not useful
Hey Gil-- it is great to hear from you! I have not seen you around the forums of late and I hope all is well in your world.
Thanks for the link! What you found is pretty darn close to what I am looking for. I think the size is right in there and you could be right about the frosted finish effect. I will keep this in mind for if my casting flops. Which, I have started making the mold. I poured the first half yesterday and so far so good.
Currently, my plan is to pipe light into the crystal using a tube of sorts. I am also flirting with using fiber optic. I don't want the crystal blazing with light but my guess is, fiber optic will go the other way and not produce enough. I could be wrong though, and I won't know until I try it.
Anyhow, as usual, I am blabbering.
Nemo sends his greetings to you. He said to tell you he can use another deckhand. So, if you enjoy sinking ships, fighting octopuses, eating seaweed soup, and exploring the ocean depths... then this is a job for you.