X-ML de-doming method with 100% success?

Anyone have specs for the XM-L U3?

Don’t want too much from this little light. Other lights have a (much) larger reflector in this topic where has been measured 120-180-200kcd. So, it’s not fair to compare with them. With an original xm-l it can 45kcd maximum, and this increased to 85kcd, it’s not so bad.
Not so bad??? It’s an outstanding value from such a little light. :slight_smile:

85kcd is really really good result for a single battery light. Not to mention the $15 pricetag (without emitter swap yet of course).

Anyone doing this on Small Sun T13? Nice big reflector there, standard T6 XM-L ready to peel, and with the resistor mod it should really give good result.

I plan to do T13, but mine has not arrived yet. And even if it did, I don't have a way to measure lux anyway to publish result.

EDIT: Sorry, price was $22 shipped.

Except at 1 meter the hotspot is around 5cm… It’s absolutely tiny. I did it to mine before accidentally breaking the bond wires trying to fix it.

My X9 is killing my STL-V2 now. I keep grabbing it when I head outside. Hard not to try de-doming the V2, but I like the beam….

outdoor beamshots Skyray A0 clone, distance 200m

mouse out with dome

mouse over dedome

Nice mouseover… that pretty much nails the results I had as well.

X9 de-domed
Old lux 38,120kcd
New lux 61,920kcd

Old lumens 786
New lumens 575

Nice beamshot viffer750. Amazing the warm (er yellow) shift on these de-domed. Mine too. I est from 3C 5000K to 3500K (er yellow). IF I do another, I’ll start with a U2 1A and hope to end up at 5000K. Craig at Illumination Supply has some U2 1A on 16mm boards on sale for $6.50……

You're absolutely right, Viffer. That little A0 clone is so small I forget that the reflector isn't as big as it's output makes you think it is. That is an amazing difference!

The C8s arrived!!! (5 of them :bigsmile: )

They cost me >$15US each and include aluminum reflectors, glass lenses and an overall very good fit and finish considering the price.

Three of the five have quite cold tints so I decided one of those needed de-doming. I used the Dremel method this time: ground the LED dome down to <1mm and stuck the felt wheel in before finishing with a optics cloth.

So far it looks very promising: When at 2.5A (battery at 3.8V) it throws as well as a X9 at 2A (3.6V) however the hotspot is 1/2 the size…. just recharging the batteries to put them both on a even footing… photos to follow. :smiley:

Looks like the tint definitely got better.
Are colors like that in reality also? :slight_smile:

Beam-shots of the cut-domed C8 vs X9


Stock vs Cut and polished dome… the difference is more then is shown by the camera


X9 vs cut + polished XML of the C8

yes, similar

Had to a have another play around with the C8s…. and here is what i got:


The partial de-domed I mentioned in the post a few above is on the left and a complete de-dome on the right, both were the same tint before any mods.

To do this I used the method of running the LED until it got very hot (took pill out of C8 body and attached it to a battery, took all of 1 min to get hot enough) and then I just peeled it off… piece of cake and left a perfect finish.

Keep testing guys.

Out of these experiments will come a formula to convert many leds into great performers.

http://www.taschenlampen-forum.de/attachments/fritz-moddings/11929d1349208384-throwerkopf-47s-x10-arme-00028986.jpg

Bs @ 250 meter ,12 sec,220 KLUX

DX SST 90 Reflector ,XM-L U3 cooper dedomed @ 4,9 A >)

Xandre

If I de-dome my greenish purple T6, will it give me a better tint?
It sits in a p60 host.

Yes,it will go to more yellow.

Xandre

Can you measure Lux?
It will be very interesting, which dedomed gives more Lux.