Can I trim a star emitter?- Mtbr.com
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  1. #1
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    Can I trim a star emitter?

    I have a red P180A LED emitter on a 20mm star from DX.
    In order to get it to fit into a flashlight case I've got, I would need to trim it down to about 18mm diameter. I could file or grind it.
    Would this work, or would it destroy the circuitry in the star? It doesn't look like it would destroy any of the circuit parts of the star.

    I have a 5-mode 1000mA circuit board for Cree and SSC emitters to use with this.

    OR, does anyone know where I can get a Red 18mm star with a lot of power?

    I'm trying to make a multi-mode, powerful, rear light in a handy carrying case for my bike.

    Thanks

  2. #2
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    You should be fine as long as you don't grind away the circuit traces.

  3. #3
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    Yes

    I've done it alot on some of my builds. Issue is the cut or ground surface is electrically conductive. You will need to isolate solder points and mount points that are in the area of the cut/ground star. I just cover everything with a thin layer of AAA to electrically isolate it.

  4. #4
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    Aaa ?

  5. #5
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  6. #6
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    OK thanks

  7. #7
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    I trimmed quite a bit off my Cree R2 20mm stars to get them to fit in my housing. No problems, work fine. I used thermal paste on the back of them and screwed them to the led plate.

  8. #8
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    I timmed it and got it to fit in the circle, but it is still too thick. I can't seat the reflector fully. I wish I could find a red emitter that would fit this flashlight housing. It is a Cree Ultrafire C2 from DealExtreme. They sell just the housing, and you put in your own emitter and circuit board.

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