I have seen it recommended for high powered LEDs in threads just like this one. More than once. This was based on the heat transfer and the fact that you can remove the led's much easier than you can with epoxy.

I also just found a thread abount the AS adhesive compared directly to thermal tape at overclockers cafe. The tape wasnt too far behind in my opinion. Especially for this application.

I guess I will just have to see for myself.
mx4intx Reviewed by mx4intx on . Calling out to Weezard for LED advice My friend, I've read your stuff here and at Steve F.'s site. I want to build a dedicated flowering lamp using Ledengin 15 watters. (4 reds, 1 blue, and possibly 1 warm white; LM 317's so I can tweak the ratios.) Essentially, a copy of your 4+1 cake pan lamp but built on a 4 x 18" finned heatsink so I can see what's going on under it.) If I were to post my picks for power supply, resistor ratings / values, etc., would you critique and perhaps offer some guidance? I have already purchased Rating: 5