DTD: New prototype head...what do you think?

Hi folks,

I was playing around in the shop the other day and started some more complex machining on the head. These lights generate a fair amount of heat when run on "high" for extended period. Creating more surface area on the head is one way to reduce the heat build up. I've been dong a lot of empirical testing in my integrating sphere and the reason I finned this head was to see if I could get more lumens out of this light.

Like it? Hate it? Don't care? Comment! 

Just adding these fins gave me about 20 more lumens over the first three minutes of operation (the duration of my test). The difference between 500 and 520 lumens is not visible to the human eye, but if I can find several of these incremental efficiencies I might be able to get up around 600 OTF lumens. It's sort of like squeezing more horse power out of a Ferrari though. You can do it, but is it necessary? Probably not :)

More photos, less talk, after the jump....