how to make my CREE optics stay on??? - The Planted Tank Forum
 
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post #1 of 7 (permalink) Old 01-22-2012, 02:10 AM Thread Starter
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how to make my CREE optics stay on???

So i just finished my first LED build, and let me tell you, this stuff is addictive! I bought the LED's and optics from rapidled.com, and here's my question: how do i get the optics to stay on?? i press them on, and they stay.. for a while, but if they ever get touched at ALL.. they fall off. I'm afraid to use thermal adhesive because well... i don't want them to be PERMANENT, but semi-permanent would be nice. anybody come across this problem before?? is there a safe and easy fix?? thanks in adance guys! i appreciate all of you who have paved the way so that guys like me can come along and reap the benifits! (aka.. a sweet led light fixture for under $200!)
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post #2 of 7 (permalink) Old 01-22-2012, 06:49 AM
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Thermal Adhesive isn't really what I'd call permanent - unless the optics are being mounted somewhere that you would see glue marks if you rearranged the leds then I would just glue them.
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post #3 of 7 (permalink) Old 01-22-2012, 03:50 PM
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I used tiny spots of silicone to glue them in place. It just takes 2 or 3 little spots around the optic to hold them.

Hoppy
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post #4 of 7 (permalink) Old 01-23-2012, 05:38 AM
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I just used small drops of five minute epoxy, very small drops as recommended at DIYGroupbuy. I'm pretty sure they will come of if I want them too giving my prior failings trying to glue plastic with epoxy.
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post #5 of 7 (permalink) Old 01-24-2012, 02:40 AM
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I use hot glue wth good success. It needs to be steamin hot to stick to the stars though.
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post #6 of 7 (permalink) Old 01-28-2012, 06:50 AM Thread Starter
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thanks guys. man i thought they were a press fit solution and i was about to punch something... a wall most likely. so my fist and I thank you! i ended up using the small dots of silicone and it's working like a charm! i'll have to post a picture of the light i built one of these days. DIY is certainly addictive, even if it's not always financially benificial the first few times around haha..
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post #7 of 7 (permalink) Old 01-28-2012, 10:06 PM
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Quote:
Originally Posted by Hoppy View Post
I used tiny spots of silicone to glue them in place. It just takes 2 or 3 little spots around the optic to hold them.
This is what I did too and it worked great. Be mildly careful though, as cured silicone conducts electricity and you want to avoid shorting anything.
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