Building a high CRI flashlight with "copper mounted sinkpad". Price about 4$ (with beam/CRI shots)

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RaceR86
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Building a high CRI flashlight with "copper mounted sinkpad". Price about 4$ (with beam/CRI shots)

I have just modded a light.
Its got a high CRI emitter mounted on “copper Sinkpad” that I got from vestureofblood…
Guess the total price!

___________

Enough guessing, lets cut to the chase..

Sipik SK68 (clone) 2,99$
“Copper Sinkpad”, 0$
Nichia 119 1,11$
Tiny piece of Kapton tape, 0,05$
A little drop of Fujick 0,05$
A piece of solder:, 0,01$
= 4,21$

The Sipik I used I actually paid a little more for, but I have a 2,99$ Sipik on the way. I also bought 5 of the Nichia 119 emitters, but they were some marginally more expensive when I ordered. But if having a 2,99$ Sipik and ordering today, it could be a total of around 4,21$, including most stuff.

For those not familiar with the Nichia 119, you cant use a typical XP-G MCPCB or anything that I know is easily available. I decided to make it work anyway.
Lets start with the “copper sinkpad”.


Ill just use the stuff on the side… Its free.. Since it came from a Sinkpad sheet, ill call it a “copper sinkad”.. Silly

If the led sits too high, it will not focus properly when fully zoomed. So had to make them a little thinner to match the stock MCPCB.

There are my two new Sinkpad parts..

Reflowed. Direct bond to copper Sinkpad.. Silly (lol) Thread about how I reflow here.

Now, time to ruin the heatsinking (at least some of it) with some kapton tape..
okay, who cares. The emitter is rated for 700mA. I will obviously not run this light on a 14500, which would push out around 1,5A to the emitter. Depending on the emitter, emitter current on a sipik with AA battery is around 300mA, 350mA, max (according to my measurements, with my drivers).

May not be the prettiest “MCPCB”, but it sure is unique! Big Smile Used Fujick under it, normaly I would just use thermal paste if the emitter is pressed, but I wanted to make it more durable.

High CRI Sipik complete..

Just a fun fact.. That sipik have had the following emitters:
XR-E, XM-L WW, XM-L CW dedomed, XP-G2 WW, and now the Nichia 119. It have also had two driver swaps (back and forth).
I should also have put on solder for attaching wires when I had the “copper MCPCB” on the cooking plate. Because I had issues getting solder to stick afterwards (despite using flux/rosin). I messed up the reflow job due to that and did it again. That time on aluminium plate with a solder iron. It was much easier, because getting the reflowed “MCPCB” off the cooking plate without ruining the alignment was a PITA.

Now, its done.. Its one of my “house lights”. Perfect for indoor use, cheap enough to not care about at all. No tunnel vision. The ability to zoom/point at stuff is nice to have for such a type of light.
I don’t like CW much. I think it was said the emitter was around 3500K some place (I never checked the spreadsheet), it looks to be around 3500K. Perfect for indoor stuff IMO.

Compared to a very CW XR-E it looks warmer in the picture than what it really is. For the record, the Nichia 119 is now sharp, it wont get sharper looking.

Basically the same size as an XR-E when its on full flood.

Lets look at the CRI then. White balance was set to automatic, so these shots does not reflect the real life tint.

Sipik with XR-E

Sipik with Nichia 119

XM-L T6CW (about 6500K and 65 CRI)

XM-L T6 3C (about 5000K and 75 CRI)

XM-L T5 5C (about 4000K and 75 CRI)

XM-L T3 7C (about 3000K and 80 CRI)

If I compare the Nichia 119 and WW XM-L (80-CRI) its not much difference in CRI on the picture or in real life to be honest. But it real life the 3500K looks nicer to me (at least on low currents). And that is almost surprising, because zoom lights have a tendency to mess up nice tints.

All in all, very happy. Especially for the price.. Wink I obviously have to forget about labor price.. Silly
Putting in a Nichia 219 would have been soooo much easier. But for indoor, i prefer slightly warmer.
And now I can brag about having a high cri, “copper sinkpad”, zoomie for about 5$. 8)

Thanks for reading, hope you liked it.

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Edited by: RaceR86 on 05/16/2013 - 19:09
ryansoh3
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10 bucks? Big Smile

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$5? cant wait to see this

garrybunk
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$39.95?

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relic38
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Three easy payments of $19.95 (plus shipping and handling)? Big Smile

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Bort
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relic38 wrote:
Three easy payments of $19.95 (plus shipping and handling)? Big Smile

and we will send you a second widget at no extra charge, so thats two widgets for the low price of only three payments of $19.95, just pay shipping per item of $6.95
So act now and get this amazing deal, and if you order within the next 6 minutes we will throw in a third widget absolutely free, thats three widgets for the low, low price of only three payments of 19.95, add $6.95 shipping/handling charge per widget.

The Journal of Alternative Facts TM

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33696933
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1 dollar Bob!

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DB Custom
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$13.95 and a 2 yr contract.

relic38
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DBCstm wrote:
$13.95 and a 2 yr contract.

It’s high CRI… that’s a three year contract, easy. Silly

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$5.01 bob

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RAW74
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how about 50%off 40,000 items?

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RaceR86
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No need to guess more. OP updated. ^^
Smile

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RAW74 wrote:
how about 50%off 40,000 items?

if the OP has 40,000 items like a certain vendor we are all thinking of, i’ll be impressed

The Journal of Alternative Facts TM

"It is critical that there is a credible academic source for the growing and important discipline of alternative facts. This field of study will just keep winning, and we knew that all the best people would want to be on board. There is a real risk in the world today that people might be getting their information about science from actual scientists"

 

djozz
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great build RaceR! I Like that. And it makes me jalous not having much time to do much hard core modding like this.

relic38
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Very cool build! I like the emitter mount, very creative. Nice job!

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RaceR86
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Thanks Djozz.. Smile
Not sure if an emitter swap is hard-core.. But on a second thought. I could probably have done 30+ emitter swaps in the time it took me to do this single one. So, emitter swap, done the hard-core way. Silly
When that is said, now that I have gained some knowledge and skills. If I were to do another one of these, it would probably take me 1/5th of the time..

Edit: Thanks Relic

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jacktheclipper
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Cool

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Nifty, I may have to copy you. I have five of those little guys too. Great build write up and awesome comparative pictures. Those color comparison pictures alone make this thread worth stickying or something. Thank you very much.

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When Race gets his R motivated
His builds are so cheap they are hated
But the price is so right
We’d buy them all night
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Oh man! HAHAHAHA! At least you saved yourself from using up one of your precious sinkpads. Big Smile

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Nice. The work bench that is. You’ve got yourself a real racey little light there. Very creative.

 

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This is BUDGET light forums ..lets quit discussing expensive lights like this that no one can afford .

Next I suppose you'll be talking about 5$ lights ..where will it end ?

       καὶ τὸ φῶς ἐν τῇ σκοτίᾳ φαίνει καὶ ἡ σκοτία αὐτὸ οὐ κατέλαβεν

                            

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Krono, thought I was the only one left that remembered that movie! lol

Been known to say that and folks look at me in total lack of understanding.

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that mod made me smile! Very ingenious and thrifty too. Great to see someone use those bargain basement Nichia 119s too, I remember when they popped up on here. One day when I have time I’ll make some closet lights with them.

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To me this has nothing to do with saving money.
This is all about the challenge and the reward of doing it yourself. It does not matter if the flashlight cost is 5$ or 500$. The fun is in the challenge and the making of it. To me, there is no more fun in the challenge of rebuilding a 500$ than a 5$ light. I actually prefer doing it on cheap lights, it adds so much value to them.
This project was about pushing the boundaries of cheapness for a high cri light and on top of that using a “copper sinkpad”. Basically making a high CRI light/zoomie cheaper than I have seen anyone else do. The famous SK68 was a nice light do to it on since everybody is familiar with it. I could actually have used a even cheaper light.

The the funny part is using the side of a copper sinkpad board to mount the emitter. Hence this might be the worlds cheapest high cri sipik with a “copper sinkpad” made to date.. Silly As far as I have seen at least..

I wonder I there are a few people here who does not know that this Nichia 119 emitter cant just be thrown on a regular XP-G Sinkpad like a Nichia 219. I don’t even know where to buy mcpcb for Nichia 119. Last time someone asked, there was no one on this forum who seemed to know..
So hey, why not make one.. Smile To some, that is what modding is all about. Improving stuff, making unique stuff, building the stuff you need with the tools you have right in front of you there and then. On this one, I decided to do it the hard way. Its a challenge.
There is also an easy way to do it.. But that is for noobs. Ugly copper Sinkpad with kapton tape beneth is where its at.. :bigsmile: Much more entertaining! Big Smile

People have reacted that I used too expensive parts on stuff before, just because I would pay a few more bucks then them for what I consider a better product more fitting to my needs. Now, people react that I do things too cheaply.. Big Smile
Its a tough audience to please at times. Silly
Building a light too cheap for some members on BUDGET light forum. 8)

Thanks for the nice comments. I sure hope this one put a smile on someones face.

Ima4wheeler, I think you will find this method “slightly easier” than the way I did it in this thread.. Smile

DBCstm, thanks for the poem! 8)

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Thanks for sharing the motivation. Wink
It inspires us across this great nation
To make do where it counts
As the pressure it mounts
Back to basics can be our salvation.

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Does heat have to transfer through the kapton tape? Isn’t it only the positive side that needs to be insulated?