Here is how those boards with the depression/gap thermal pad perform.
Note: Ambient temperature is slightly higher on the Noctigon XM20 testing, which should give Sinkpad a leg up! Solder alloy is identical in all tests.
What is not mentioned here is that none of the 3XP have a depression/gap at all on the thermal pad, in the single batch we did so far for those.
Important is that not all boards have that depression for the thermal pad is only a certain batch, again the one in the test is one of those, mistakes happen and flaws appear, we are not claiming flawless here.
In this case of the thermal-pad depression/gap boards batch, there is no thermal issue due to the slight depression as the seller implies as the test shows it.
that is a nice test Hank! It indicates how well the direct bond to copper of the thermal pad actually performs. I am sure that a gap filled with solder does have some influence on those temperatures, but doubt that the influence will be more than 1 or a few degC.
Still, for the hardcore snobs, even if you proof that the difference is negligible, no gap will always be more desirable than a gap 
It’s a very sexy design. Will there be a solder paste stencil or .brd file available for getting them made and what do you use for jumpers?
Wool.
Sorry, couldnt resist.
Wait… I just realised that wont mean a thing to half the forum. Jumper = knitted sweater/pullover
Hank, thank you a lot! Amazing demonstration!
Rufusbduck, usually I make it with little piece of silver 22Ga wire ) there are no paste on board but I may give you Gerber file if you need
I would definitely be in for a few of the quads once those are ready.
I see the LEDs goes on differently for serial vs parallel. Might put S, P- and S-, P on those pads in the silkscreen.
I asked Hank at CNQG about stencils and he said they won’t be selling any. I have a query in now about releasing the file so we can have them made at Oshstencil but whoever is more proactive on this will certainly have a leg up on the competition.
Me too.
Sooo, where are the screw holes?
Nice job Dsche! and thanx Hank for those test results. What is the thickness of the boards? That picture you have seemed to clip off the reading. I'd love to see these at 2 - 2.5 mm thick.
Noctigon triple doesn't have screw holes either.
It doesn't have a hole for wires to pass through the center. That may be a deal breaker in smaller lights. The 4XP version does though.
But center hole can be used for exactly that purpose, I plan to use it like that!
hi Dsche, any news of these boards? I have a nice plan for a quad board, I hope there will be some available at some stage.
Thanks.
Hi guys!
Sorry for delay (I’ve already said it? Heh. Sorry anyway)
Quads are ready at last, and now all boards on the its way to me (and some early adopters)
I hope it’s needed about two weeks more for delivery to me
I think example number 3 in the first post is wrong. It looks like you are driving it with 7135s with leds in parallel, but you are using two cells in series?
So how close are we to getting some quads, definitely going to give it a whirl…
Might get the quad board, and the optic
Anyone have suggestions for a good host? (most definitely going to throw a OSHPark FET at it…4x emitters need da powah!
Maybe, but it work
2all, finally got it!
Please PM me if you need some )
First build with copper (silvered) quad
