Most of us use aluminum angle. 1/8" or .125" wall thickness will give you a plenty rigid fixture. Something like 3/4 x 3/4 x 1/8 or 1" x 1" x 1/8 would be plenty good.
Awesome do you have any pictures by chance?
It’s working so well I made another one for my 32” x 32” tent and if I remember right @dbrn32 said I could add more qb lights to this driver. I would have to say it was around 200 dollars but I’m glad I went with it
I don’t remember which driver and boards you have, but maybe?
They were 4) qb132’s
Man that is beautiful!! I love the light. Im definitely going with this build. I appreciate you going out of your way and taking pictures for me. Your plants look killer too. Thanks alot man seriously
Thanks man I appreciate it very much.
No problem at all they were pretty easy to build also
Need to know which driver too so I can see how much voltage is available.
Oh sorry 240-1750 I believe you said I would be able to add a couple strips to them but they are working great now
I was haf if I did, that driver is full.
I can’t see how I need any more anyway thanks for helping with them
$200 is a very good price. I definitely think that’s the way to go.
Awesome! I appreciate it very much. I’ve been wanting to build something for a while now but i was intimidated. That info definitely helps. Thanks again man
I can help you through every step of the way. Just let me know what you need.
I just had to pop in real quick to say how funny this is.
I started this thread in October of '18, talking about how I was going to start my first grow in two months. Now here we are in January of 2020, and I still haven’t started it yet!
I had a few financial setbacks that kind of came at me in a cluster. But all that was a blessing in disguise, as far as growing goes. I’ve learned so much in the past 16 months on this forum that I feel really confident about actually getting started.
I’ve changed my plans over the past year. For one thing, I’m growing in a 4x4 tent instead of a cabinet. And several people helped correct my misconceptions about ventilation, heat and other things that I thought I had all figured out.
I have some NL and WW seeds that I’m gonna drop in a few weeks.
I’ll pop back out now and go back to watching 
NTE Electronics WHS18-08-25 Hook Up Wire, Solid, Type 18 Gauge, 25’ Length, 300V, Gray https://www.amazon.com/dp/B008UFZ098/ref=cm_sw_r_cp_api_i_xBheEbDWPMNRF The wire I got you have a lot more than you need but I built 2 lights
LED Power Supplies 250.25W71-143V1750mA IP65 CC adj thru pot https://www.amazon.com/dp/B01EP8GPB0/ref=cm_sw_r_cp_api_i_9CheEbTGJ6PSF Here is the driver it has an adjustable screw for the power out put
QB132 V1 Quantum Boards – Horticulture Lighting Group And these are the boards I got