Lighting Mars 300 cob conversion!

[Gatorbackbob]

First off, a very big thank you to member @BigSm0 for helping me with all my DIY questions, he was more than generous with knowledge on how to build a light.

Secondly, before I start this build thread, I'm going to post the safety disclaimer out of care and respect for our community and it's members, please be careful if you plan to build a light.
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[Gatorbackbob]

Ok so I grow in a micro tent, 16"x16" to be exact, I chose to do this project based on results seen from using cobs, and to eliminate a lot of heat from the grow space.
Materials used, I chose the citizen 1212 3500k gen 6 chips, 4 of them. I also ordered the solderless ideal connectors, and the Angelina reflector adapters, but I'm not using reflectors, just putting these on to slightly push light outward from the cobs.
I'm using the existing Mars drivers (2) and fan in the unit. I've ordered 2 heatsinks from heatsinkusa the 4.85 x 7. This will generate 80w of cob power when finished.

 

[Gatorbackbob]

What I did first, is take apart the unit, taking out the light board, and cutting away the silicone so I could remove the glass, then I cleaned up all the excess silicone, and cut off the tangs that were in the way of me laying the two heat sinks flush to the unit, then I traced the light window onto the heat sinks with a sharpie to get my work area drawn out

Then, since I'm using 4 cobs, I centered the four quarters of the work area, and marked my first drill holes.

 

[Gatorbackbob]

Then I drilled the holes to mount the ideal holders to the heat sink, I used a 1/8 bit, after the holes were drilled, I used a sanding wheel on my angle grinder to debur the holes, and then did the same drilling for the reflector adapters, as they require a second set of holes, and once again, sanded the burrs down

Yes I suck at drawing straight lines and drilling straight holes lol. Anyways, after all sets were drilled and sanded, I tapped the holes with a 4mm bit

 

[Gatorbackbob]

Next it's time to install the cobs into the holders! But first, I wiped the whole heatsink surface with rubbing alcohol. The cobs simply snap right into the ideal holders, very easy, just make sure you align the correct polarities!

Instead of arctic paste, I opted for thermal stickers, they peel and stick to the back of the cob

 

[Gatorbackbob]

Now I just mounted the cobs, making sure that they were positioned to run in series, going to run 2 on each driver, then, installed the adapters

Then repeat on the other heat sink

I used 18 gauge solid core wire, attaching the positive to negative on each cob, these ideal holders allow you to just strip the wire end, and push in until it clicks

This is as far as I got today, I'm waiting on my fantasmo to finish up, then I'll come back and show the installation and plug in!
I hope this helps somebody out!

 

[Dudeski]

I like it! Nice write up bud

 

[Gatorbackbob]

I like it! Nice write up bud

Thanks bro!

 

[All I HAVE]

This is very interesting and informative. Thanks [emoji120]


Sent from my iPhone using Tapatalk

 

[Gatorbackbob]

This is very interesting and informative. Thanks [emoji120]


Sent from my iPhone using Tapatalk

You're welcome! Thanks for checking it out!