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Has anybody tried making a "firejewel" necklace?


aliasjanedoe

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Basically, I'm wanting to make my own one of these:

 

http://www.firejewelusa.com/cube.htm

 

But I've no idea where to order the parts. I figure I need a small LED without a lens (since I'll be gluing it inside a bead), wire that can be used as the chain that doesn't kink, and something I can attach to the clasp to hold the battery which should be replaceable (not sure how to go about this part, suggestions welcome).

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I'd suggest using the chain as the wire, any chain should do, the LED, have a look at RS, I dunno for certain... and battery well your best bet is probably a small watch battery where the clasp of the necklace is...

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Mouser Electronics or Digikey will have everything you need. Electronic Goldmine deals in surplus and usually has a nice selection of LEDs at ridiculously low prices.

 

My guess is they use two 1.5 volt button cells and a single super bright or similar LED - no current limiting resistor is needed. The chain is the wire.

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  • 1 year later...

I was bought one of these as a present. The batteries are three of the tiny hearing-aid batteries in a cylinder with a screw-cap. It could be guitar string wire. The led is really tiny, it's just in line with the wire through the middle of the bead.

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