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This light build is for a small area, and I am using some inexpensive Cree CXA2520 and 2540 cobs. I must have gone through 10 sketches/schematics based on different cobs and current options for a small space (2x2 or 2x3). After jumping the gun and ordering some HSUSA heatsinks (2@ 21" x 5" and...

Hello RUIers. First off, thank you for this great resource, things sure have changed over the last 30 years. The last time I was this interested in the magic plant was the late 80's, so basically, old timer here. I've been lurking for the last month, and it is quite a site. So many different...