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I just got a bill for $30 for import duties....wtf. Cobs arrived in manufacturer packaging and all in order. Only shady part is they are marked as samples and might differ from original specs. They seem to work just fine. Just wondering why I'm getting an extra bill from DHL

Unless you run them very soft or dim them drastically, I believe that high powered cobs will burn you babies that close. I could be wrong but I wouldn't do it. If its a light for seedlings I think the led t8 will work better and be much cheaper for yoy

4-6 is pretty damn close. Heat and spread might cause issues. Maybe the 3w LEDs you mentioned from Steve's would work better

Looks awesome man. Can't wait to see em.in action!

I would order from heatainkUSA. Same price as above maybe cheaper. Don't skimp on the heatsink, if you get some curved, warped one from eBay you will notice the difference and be disappointed Take a look here http://www.heatsinkusa.com/4-230-wide-extruded-aluminum-heatsink/ Notice the eBay...

Just ordered my custom cut 5.88x 24.5 sheets. Gonna mount them flush and do this right

You can mix and match, but after talking to the guys here and doing a lot of research, 3000k is good for bloom. You can mix in 2700 and 4000 but I wouldn't go higher

I have used a TIG welder before. Just don't have one, wish I did

@Getgrowingson You can follow my build post here https://www.rollitup.org/t/first-led-build-cxb3590.868236/page-7#post-11620210 I'll be making a few minor revisions after talking to the led gods

OK so now I'm mulling over 2 ideas. I can simple move those shrouds to butt up against the fan, and lay them flush with the fins.. 2. Order a new piece of 5.9x52 sheet aluminum and use a hole saw to cut the fan hole. This would be a much more aesthetically pleasing version ( which I don't really...

That's an idea You are right. That's why I just built one and posted. Back to the drawing board!

I got ya. I can butt those up to the fan and flatten them out, not a problem. Thanks!

Awesome!! Looks great. Congrats, enjoy the fruits of your labor!

Sorry, correction 50$ flat shipping not including parts

Took 2 days for my order to arrive. I love Jerry

Now that's an idea! Much cleaner appearance too!

Jerry from kingbrite will send you cobs, holders and lenses for a flat rate of 50$

Heatsink 80$ Cxb3590 x4 200$ Ideal holders x 4 4$ Lenses x4 48$ Drivers x2 100$ Prolimtech pk3 5g 12$ Noctuna 140mm 25$ Fan driver 4$ Hardware and wiring 30$

Well I finally started! After attempting to drill.a few holes by hand, I said fuck this and got a drill press, what a difference!! Ingredients Cxb3590 3000k 72v x12 5.88x52" HSUSA 5.88x24" HSUSA Noctuna 140mm x4 24x36 sheet aluminum Mean well hlg-120h-1050c x6 12v 1a fan driver x4 (eBay 4$/each...

That is a 52" x 5.88 with one nocturnal fan. I used shrouds ( thanks @SupraSPL ) to direct the fan . it runs cool as a cucumber. I just built it today. 300w bar, cxb3590 x4, hlg-120h-1050c x2, noctuna 140mm fan, 12v 1a fan driver, sheet aluminum for the shrouds and the drivers sit on top...