Thermal density was my concern as well… I don’t want to run active if possible but finding decent heat sinks is challenging. Thanks for all the advice 
Total watts - thermal watts = par watts???
Is this a correct interpretation?
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You got it.
There’s just not a lot of options for passive cooling that big. If you dropped to 1050ma with vero c’s you could use 140mm pin sink from rapid. But I wouldn’t run those any hotter than that.
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Cooliance will drill and tap for free. They have a 5”x5”x2.5” specifically for the Vero COB’s. $90 for six.
Still looking at potential options. I am in no hurry. I am buying pieces and parts here-and-there
Have a part number or pic?
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@dbrn32 - the manufacture number is CPL12770QF-101. Cooliance is the brand. Not sure if they make or if they private label a mass produced Chinese part. I think they make them.
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They are probably a Chinese company, but that’s not a big deal. Those look like they would work, very similar to the ones I have actually.
When I bought them I paid about $15 per unit too. But there was minimum order quantity of 10 pieces and it was about $85 in shipping. All said and done I had $10 of them for about $240 after cc fees. I ran citi 1818’s on them at about 80 watts and they seemed to do fine.
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Cool! Thanks for checking
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COB’s came in today. Gonna set aside for now. Heat sinks are next then a couple of Meanwell 300 watt drivers …
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Two of the four did not germ… First time this has happened with ILGM beans. Should report the stock number to them for reference… They were the last two of a five pack…
No names for these two… just “A” and “B”
I have to set the RDWC up today sometime. Wanna be ready in advance…
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… thank you auto-correct for knowing I use the term “junction box” all the time…
Try terminal junction… that’s better
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@dbrn32 - I see what you mean. The EB strip @50 watts each run pretty cool. Passive cooling from the flat aluminum will suffice. Bright as hell . Thanks again for the recommendations.
Now to build a kick ass light using those 6 Vero COB’s!! Already have the design drafted 
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Very nice! Glad you’re happy with the setup too.
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Everything’s looking great 
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Thanks MB!!
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