I like where you are going with your build! It's too bad I didn't wander into this thread earlier, I would have given you a few ideas, like:
- find a local metals supplier for the aluminum. I began using HD and Lowes for aluminum channel and angle and later discovered it's about 1/3 the price from a wholesaler.
- I don't see any reason for channel - just use 3/4" angle, 1/16" thick, unless you are running the strips at max amperage. These strips don't produce all that much heat to need that much surface area, let alone putting a piece of channel inside another one. That is just overkill. In fact, I bet you could just hang the strips in there with no aluminum heatsink at all - but don't do that. lol
- I'm still using my chinese $20 power supplies, but they are only 85-86% efficient vs those Meanwells 93+%.
- Pop rivets are a lot cheaper than self tapping screws. I even pop riveted some of the strips to the channel/angle (before I too bought some thermal tape, which has worked very well so far)
- It's a pain in @$$ wiring in a lot of strips. You only have 6 now, but you will be very happy with the strips and will build more. Mark my words!
- Personally, I also think the 24" strips would be adequate for side lighting, unless you run your 48"ers horizontally around the plants (like I did). In fact for my next grow, I am going to space my side lighting closer together than the 7" spacing I currently have.
- I predict your next build will be some 'divider' type lighting to go between your plants, unless you are growing 1 monster plant in the middle of your grow area.
Good luck with your build! You will be happy with the results!