Very nice, thanks for sharing. While there might be more efficient LEDs out there, they will cost more. I think the cooling is just fine. I've got a bunch of HSF's for computers sitting around calling me to do something with them. I just don't like the light spill.
How did you attach the LED to the heat sink? Tapped the alu?
Thanks! And yes I would like to cut down on the light spill as well. I haven't been able to find a reflector for a 10W yet.
Yes, I removed the fan and tapped it. Just used a transfer punch for my centers to drill on. Obviously, I also used some thermal compound between them.