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Well, maybe the custom optic is the approach to take?

What is the best LED out there, but that lacks appropriate optics?

I found this optic for the cree mc-e. There is a tri-led narrow optic (part 158 ) that seems like it could fit the bill.

3 x MC-E = 1290 lumens at a mere 1A of power. Granted the forward voltage...

The gumsticks I linked to are NiMH, so they should be fine on the outside of the hilt and should be ok without protection electronics, no? I think they would be cool, functional additions to the...

Not sure how about your math here. AA batteries are 50mm long and 14.5mm in diameter. The gumsticks are 66mm long and 16x15mm wide. So a stack of 3 gumsticks are a tad wider(1.5mm) than 1 AA and a...

Ah optics. Can you elaborate on this? Is optics merely the case of focusing the beam in a straight line up the tube, sort of like the parabolic reflector on flashlights? Or is there more than this?...

Oh, I just picked a led that seemed to have really good efficiency. I wasn't attached to the white. But it seems to me, if you could have a very efficient white led, then why not use a filter?
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I'm a newb, trying to learn as much info as I can before I embark on building my own saber.

One thing I noticed in my reading of this forum is that often times a particular LED will be deemed...