A Perfect Dedome?

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LightRider
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I’ve been using Mek to dedomed xml2 emitters. The results ate not perfect but satisfactory with no silicone left on the done. Is there another solvent or solvents that I can add to the mek to get better results? Ild just try stuff but the idea of randomly mixing chemicals is short lived in my mind Smile

Swib
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luminarium iaculator wrote:
NEW” G2 S4 2B Smile Thumbs Up

Yes it is. The funny thing is I can still get 1000+ meters in an L2 host with a single 26650 by choosing emitters with the lowest Vf. In an ass backwards kinda way I measure the current at 4 volts on my power supply and sort them by how much each draws.

Also, with a clear solvent the tint shift is not discernible unless you compare side by side with a rosy xpl hi. In my opinion the S4 2B still makes a great thrower.

If you don’t like what it looks like on the wall, take it outside.

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Tom E wrote:

I thought new S4 2B’s are frowncry. I’m confused…

No need to be confused. There is a long thread about old and new types of xpg2s42b (and other G2) emitters here: http://budgetlightforum.com/node/45689

This picture maybe best shows difference between old and new one:

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Swib
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Tom E wrote:

I thought new S4 2B’s are frowncry. I’m confused…

The new ones show an ugly green tint shift when dedomed with gasoline apparently. Never tried personally, but others including L.I. have reported this to be so. I can say with confidence that this is not the case with a clear solvent like Aerosolve.

The new ones generally have a higher forward voltage as well which limits the amount of current available to the emitter using a single cell. From what I’ve tested the average current is about 3.7 amps at 4 volts but there are some outliers that run 4 to 4.5 amps. These produce similar throw numbers to the old school S4 2B’s.

You just have to buy a bunch of them and test them individually to find the best ones.

If you don’t like what it looks like on the wall, take it outside.

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Yes I also found that they mostly draw 3,6 – 3,8A in fet driver configuration. That is not bad for certain configurations cause battery will last longer and performance will be similar to dedomed xm-l2 or XP-L but they will of course draw more current.

And yes it really is greener and uglier than old one. But you will not notice that in reflector lights. You will only notice that in aspheric lights.

So Swib did you tried them in aspheric? If not than you will not notice ugliness of this new s41b emitter and it has nothing with de doming.

I know how to hot de dome(reported from plenty guys that it has least tint shift) and have tried all sorts of solvent methods until I find solvent that works best for me. Boiling hot solvent is best imho and I also can say with confidence that there is no difference in final result with properly(good luck with that Smile ) hot de dome or hot solvent de dome of same S42B emitter except that solvent hot de dome is far superior and easier so I can for example de dome around 50 emitters at once in not more than 15-20 minutes.
So I would really like to see someone who does hot de doming to do the same.

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LightRider
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luminarium iaculator wrote:
Yes I also found that they mostly draw 3,6 – 3,8A in fet driver configuration. That is not bad for certain configurations cause battery will last longer and performance will be similar to dedomed xm-l2 or XP-L but they will of course draw more current.

And yes it really is greener and uglier than old one. But you will not notice that in reflector lights. You will only notice that in aspheric lights.

So Swib did you tried them in aspheric? If not than you will not notice ugliness of this new s41b emitter and it has nothing with de doming.

I know how to hot de dome(reported from plenty guys that it has least tint shift) and have tried all sorts of solvent methods until I find solvent that works best for me. Boiling hot solvent is best imho and I also can say with confidence that there is no difference in final result with properly(good luck with that Smile ) hot de dome or hot solvent de dome of same S42B emitter except that solvent hot de dome is far superior and easier so I can for example de dome around 50 emitters at once in not more than 15-20 minutes.
So I would really like to see someone who does hot de doming to do the same.

L.I., can your experience with solvents answer this question I had earlier?

Quote:
Is there another solvent or solvents that I can add to the mek to get better results?
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I said several times that I use hot nitro paint thinner (I don’t know if you guys in USA have this). So I use boiling hot Nitro paint thinner. It is that simple…

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luminarium iaculator wrote:
I said several times that I use hot nitro paint thinner (I don’t know if you guys in USA have this). So I use boiling hot Nitro paint thinner. It is that simple…

!{height:400px; width:400px}https://www.bricoferonline.it/Media/img/kelix-diluente-nitro-1794.jpg!

Ya I know. But that product is not available in the states nor are the chemicals it is made up of. Sad Those of us in the states are apparently not able to self regulate this kind of product. We need some one like a government to be responsible and block its availability. Wink

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I think you just must try stuff in USA that is made for thinning a paint or cleaning brushes from paint.
And remember boiling hot stuff(it would better be to cook that outside because of smelly and potentially harmful fumes).

I had similar problem when I was trying to get how do you USA guys say… “mineral spirits”.
There is no such thing on our market…
I needed that for diluting true oil (an excellent gunstock finish). And at the end I find something that works great (zippo lighter fluid Smile ).

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feralcomprehension
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Note well that the boiling of flammable solvents requires the use of *electric* heat.   I learned that the hard way...

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feralcomprehension wrote:

Note well that the boiling of flammable solvents requires the use of electric heat.   I learned that the hard way…

Oh my!

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luminarium iaculator wrote:
I think you just must try stuff in USA that is made for thinning a paint or cleaning brushes from paint.
And remember boiling hot stuff(it would better be to cook that outside because of smelly and potentially harmful fumes).

I had similar problem when I was trying to get how do you USA guys say… “mineral spirits”.
There is no such thing on our market…
I needed that for diluting true oil (an excellent gunstock finish). And at the end I find something that works great (zippo lighter fluid Smile ).

I’ve also noticed that products in other countries like paint thinner and other similar chemicals have good documentation regarding its make up. In the us, i never know what is actually in the product. Sometimes it’s listed on the product itself but often not. So if I want to find a product with taurine good luck to me. Silly

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Just finished my first dedome! An XM-L2 emitter in boiling paint thinner. It went extremely fast. Like 2-3 minutes.

I used this thinner http://www.jula.se/catalog/bygg-och-farg/farg-och-fog/fortunning-och-ren...

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So you finally started to listen to me guys… Smile Works each time, and it works perfect. 2 minutes dome off…
But if you want ultra clear dd die than 15minutes and after that put it in isoproply alcohol bath and blow with compressed air. Result like MEM or Mitko from this thread each time…

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I hate nitro paint thinner it smels so bad but i must try it if the results are so good.

Edit:

Tried and successfully dedomed 2 leds, xml-2 u4 and xpl v6, i like the results and i will use this method from now on.

 Olight i3s, Olight S1, Olight S Mini, JetBeam Jet-1, BLF 348, Astrolux S41S, UF SK-98, Convoy S2+ 3*XP-G2, Convoy S2+ 3*XPL, Convoy S2+ 219CT, Convoy M1, Convoy C8, Brinyte B158, Courui D01, Convoy L6, Noctigon M43

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Hello, it seems too greenish dye? Is a new xpg2 s42b, dedomed gasoline, placed in UF 1504, runs at 4.05 amps at boot with blf a6, regards!

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Yeah, green. Silly

09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0

khas
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luminarium iaculator wrote:
I said several times that I use hot nitro paint thinner (I don’t know if you guys in USA have this). So I use boiling hot Nitro paint thinner. It is that simple…

Thanks for sharing, I am in Italy this week and found this :

I don’t know is there is a difference between Antinebbia 180 and Antinebbia ?
Sledgestone
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My god! Put the light back together with the newly dedomed xm-l2 emitter. It has the worst green tint I’ve ever seen. Totally unusable..

Will Nitro thinner make the tint to change less to green?

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Sledgestone wrote:
My god! Put the light back together with the newly dedomed xm-l2 emitter. It has the worst green tint I’ve ever seen. Totally unusable..

And this is why you dedome cool white LEDs, not warm Wink
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It was an xm-l2 u2 1a emitter. So that shouldn’t be the problem. Maybe it was the thinner I used?

Tried it against my ZL sc600 mk iii hi first. Shouldn’t have done that Facepalm

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Guys. Any nitro thinner from your local shops should work. It does not have to be one I linked. Use from your own local market. For best results follow my mentioned method. My all come ultra clear so should yours…

Edit:

“If you want ultra clear dd die than do 15minutes of boiling(you must see bubbles if it is boiling hot) and after that put it in isoproply alcohol bath and blow with compressed air. Result like MEM or Mitko from this thread each time…”

And perfect method is revealed. Party For harder silicone base emitters that are hard nut to crack do the same but you can slightly and carefully cut them from side to side with scalpel which will allow better solvent penetration.

You will all thank me after this Smile I did lot of experiments with my market available solvents to find that the best stuff is in front of my nose in basement and it is even not that harmful since a lot of guys cleans paint on their hands and even face after messing themselves with color they just use mentioned nitro paint thinner on the skin Big Smile

P.S.
Did I mentioned that you can de dome them 5-15-50-100 or even 1000 if needed at once with this method? (just choose proper size pot)

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Will the nitro solution dedome a XHP70.2 emitter?

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AlexGT wrote:
Will the nitro solution dedome a XHP70.2 emitter?

I guess you should try Smile I am very convinced it will. Especially if you closely follow what I wrote. Good night people… 2am…

Modding is making something how you want it to be, not how it comes stock...

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Thanks for sharing luminarium iaculator. Thumbs Up

 

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MRsDNF wrote:
Thanks for sharing luminarium iaculator. Thumbs Up
khas
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Just tried luminarium iaculator’s metode with nitro paint thinner with two XM-L2 CW is works great :

Thank you so much for sharing this Thumbs Up

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This is proper result of my method Thumbs Up

Thanks… Beer

Edit:

Another tip… Don’t go to close with compressor air gun when blowing out remaining silicone. Strong compressor could be to much for that tiny wires. Use it at least 20-30 cm above led and if you can aim minus toward plus size of emitter (so all junk will fell over + wires in single blow).

Modding is making something how you want it to be, not how it comes stock...

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khas wrote:
Just tried luminarium iaculator’s metode with nitro paint thinner with two XM-L2 CW is works great :

Thank you so much for sharing this Thumbs Up


What about the tint?
khas
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Theodore41 wrote:
What about the tint?


X6 XM-L2 CW DD

There is a bit of green on the very low modes but overall considering it started out as a unspecified XM-L2 CW with a blue tint, I would call the DD tint white.

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