Quote Originally Posted by DreadedHermie
If "round" ain't a deal-breaker (think UFO) I found some pre-teflon era aluminum skillets / fry pans at thrift shops and garage sales. THICK! Buy 'em for fiddy cent.

Failing that: the eBay heatsink guy ships quick and cheap. 8.5" by whatever length you want. Cuts are free, too. I was originally going to build "photon torpedoes" of single-file leds on a half-width heatsink, but decided to just build dedicated lights to work in my space, rather than build an all-purpose, slide-it-in-anywhere kinda supplemental light. (This thing is kicking butt, BTW-replaced the 400 HPS no problem. :smokin

Anyway, rep me an addy and desired dimensions and I'll gift you one, if it'd brighten your day. :thumbsup: Gotta go! Still busy! (It's a good thing, tho)
"Must spread some reputation around before..."

Found an affordable 10" X 10" 'sink.:thumbsup:

But thanks big for the offer.:1baa:

Also found a 12V. 21A. supply and a couple 12V. 8A. dimmers dirt cheap.

Leds tested well.
Got 5 that eat 1.2A @ 10.5V.
4 @ 10.4V and 1 @ 10.3V.

Found 60 degree lenses for the 15W. , (perfect for my bloomin' space), and 90 degree lenses for the 5W. arrays that will now be veg lights.
Whymy actually buying stuff?
Hadda windfall, sold 4 tubes of ICs for $500.
So, 10 X 10, I'm thinkin' 10R and 2B.

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Mundane, but effective.

Yay! :yippee:
Mailman just brought the UFO knockoff.
Allaway from Hong Kong.
Hmmm.
Nice!
At 12" I get 8k lux.
Just a tad less than my cakepan with 5 15W leds. (8.4k)
Just 500 lux more than my lensed 5W. array but @625nm. vs 660nm. for both my lights, so it's very relative.
My 10mm 300 led homebrew reads 3.5k
Best I can get out of the HGL 5mm kit is 3k.

First eyeball impression of the faux UFO?
Very bright!
First earball impression?
A bit louder than I had hoped.
Lets give it a week and see what the girls think.
For $200 bucks it's affordable.
For the price of a Procyon, you can hang 2 UFOs and still have some lunch money left.
Now we should see some real competition from the grow light mfgrs.

OK I give up trying to make the diagram size properly. :stoned:

Regards,
Weezard