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Yea, that's what I meant. Thanks guys. :weed:

I had a few questions if anybody knows. Should I ground the heat-sink? Can you connect drivers in parallel before the AC outlet (to cut down on # of cables)?

So I used both drivers, but ditched the 3-up chips. They would have fit (barely), but it would have been too much for the heat-sink thermally. The copper shims worked perfectly; luck was on my side as I did not have to flatten the tabs on the Ideal holder. The 18ga 8-conductor "alarm wire"...

It's constant current @ 700ma with variable voltage, giving up to 57v to use on each channel. I don't know if it's possible to bridge channels but I feel like it would be simpler to use a driver better suited to your application. You could potentially parallel 2 on a channel but that's going the...

I got them from here: http://www.ebay.com/itm/131592491554 The seller relists everytime they sell, so he might have a lot of them.

No no, I've heard of using urine. Isn't there a concern with the contaminants in the urine used? Your idea sounds interesting. What sort of community do you live in?

LOL - Things to file under "If things go post-apocalyptic". You can also concentrate your pee to make explosives.

I think it has a lot to do with soil biology. But these nutrient fixing processes take time. Perhaps by being able to manipulate things a bit, like adding a disproportionate amount of red wigglers and myco. The no-till style of growing seems very effective. Brownguy420 on youtube has good...

Does tinning the wire provide a more electrically sound connection, or is it just to keep things in place? I was planning on just putting a dab of thermally resistant glue on outside.

All good, I appreciate your input. I have 8 conductor "alarm" wire, which is solid, so it's an attractive option. I also have stranded though.

If Im doing 2 drivers it'll be a cob and a chip each channel. If im doing one driver, one cob and two chips, a channel.

Should I connect two channels at the end of the line like that? You're right about the epoxy, I can just hammer things off if I want to reuse the heatsink for another purpose.

I think I can use the Ideal holder with the shims. They're thin, and the Ideal holder should overhang it, and line up with a t-slot channel. It'll be floating between the cob and the t-slot, so I might use adhesive on one of the sides of the copper. I'm not that confident the heatsink will deal...

I wanted to avoid buying a drill press, and putting too much money into the build. I'll think about it for a day, though. It's a useful tool. Thanks for your help. I feel like I'm trying to fit too many cobs in such a small fixture. It IS concerning how close to the deep walls the LES are. I...

I received the CXA30 Ideal holders, but it seems like I'm transitioning to thermal adhesive. I have some textured aluminum that I was going to make a shroud with.

I think I'll use these 1" x 2" copper shims under each CXA3050, a very economical solution. That just covers the LES, so while it's not ideal, I'm now satisfied by the fact that the LES has copper contact all around. I have a feeling my wiring is going to be a cluster-f. Here's the new layout...

Yea, I see what you mean. I think it needs to be addressed because I'm pushing limits on the 12" heatsink thermally. The copper plate idea seems like a good way to go. Thanks guys.

I'm interested in the effects of more closely matching the even spectrum of sunlight. If one wanted to go crazy, the controllers people are using for their salt water systems are crazy awesome. Sunrise/sunset according to time of year and location, ramping individual channels (e.g. 730 @...

Thanks man. - It's funny you should say that because both the cobs and drivers were recommendations I saw for others users in this forum. Thanks RIU. Anybody know how to like a post? For the life of me I can't figure it out. The page that tells you how it works tells me I don't have permission...

Hey guys, I wanted to share my upcoming starter panel with you guys. I've been wanting to build a cheap panel to learn before attempting something serious. When I saw those CXA3050's at $8.50, it pushed me over the edge. Garbage bin, but hey, great for learning I'm sure (4860 Flux (lm) @ 85 °C)...