Luminus SST-40, a N4 BA bin tested

[Sledgestone]

I have no way to measure lumen, but I’ll measure the candela for sure!

[AlexGT]

@Sledgestone

@Sirius9

I also dedomed some of this leds and I am not that happy with results, I used heated liquid method that gives me almost perfect results with XPE, XPG, XML and XPL types of leds but SST-40 is tought cookie. In all cases silicone dome did not separate from phosphor surface so cleaning was required and that never gives “perfectly clean emitter surface” results.
So, I am not happy for now.

Use straight Toulene. Dome comes off in about five minutes in finger warm liquid. Canned air is good to remove silicone leftover. Be careful to heat it though. Tried two times in boiling water and the LED came of with the dome. Also the tint is fantastic!

Left: Sst-40 dedomed in hot nitro thinner.
Right: Sst-40 dedomed in finger warm Toulene.

That dedomed tint looks fantastic Sledgestone!

I wonder if this stuff is the same as what you used… This one claims 99.7% pure Toluene
http://www.ebay.com/itm/Toluene-Toluol-500mL-Reagent-ACS-99-7-Solvent-Paint-Remover-Nail-Polish-/272269129997?epid=729708978&hash=item3f6481390d:g:O8YAAOSwj0NUielh

[Jerommel]

Yeah, that’s the stuff.
500ml is a nice amount, USA seller, shipping to NL would be either impossible or very expensive…

[Sledgestone]

That should be the same.

Mine is 100% pure though, but that shouldn’t make a difference.

This is available from the UK
https://m.ebay.com/itm/Toluene-Toluol-500ml-99-9-Pure-very-High-quality-ACS-Lab-Grade-500-ml-/332123462068?hash=item4d5419d9b4%3Ag%3AgssAAOSw4CFYoDTS&\_trkparms=pageci%253A1054de2a-a6dd-11e7-bc6b-74dbd1803da5%257Cparentrq%253Ad95e892615e0ab66b1231601ffff0406%257Ciid%253A1

[Newlumen]

@Sledgestone

I have no way to measure lumen, but I’ll measure the candela for sure!

I am very confident sst40 dedome outthrow xpl dedome in both lumen and lux… I need opinions from you. Thanks.

[Sledgestone]

@Newlumen

@Sledgestone

I have no way to measure lumen, but I’ll measure the candela for sure!

I am very confident sst40 dedome outthrow xpl dedome in both lumen and lux… I need opinions from you. Thanks.

Well the SST-40 will have much more lumen and I think throw should be similar. But the SST-40 will run much hotter at over 8 amps vs the XP-Ls 6 amps.

[Jerommel]

Well, whaddayaknow…

Toluol analysenrein (C7H8) mind. 99,5% - 1 Liter in Braunglasflasche

€19.48 shipped from DE to NL.
Ordered and payed just now.

[Jerommel]

@Sledgestone

That should be the same.

Mine is 100% pure though, but that shouldn’t make a difference.

This is available from the UK
https://m.ebay.com/itm/Toluene-Toluol-500ml-99-9-Pure-very-High-quality-ACS-Lab-Grade-500-ml-/332123462068?hash=item4d5419d9b4%3Ag%3AgssAAOSw4CFYoDTS&\_trkparms=pageci%253A1054de2a-a6dd-11e7-bc6b-74dbd1803da5%257Cparentrq%253Ad95e892615e0ab66b1231601ffff0406%257Ciid%253A1

Hey, that’s a fairly good deal too.
New listing? Hadn’t found it previously, or maybe i thought it was too expensive… (?)

[KawiBoy1428]

Ordered this to try out… $35.09 shipped….http://www.ebay.com/itm/Toluene-Toluol-1000-mL-32-fl-oz-/201393760689?hash=item2ee400e9b1:g:I7QAAOSwDNdVsQ2r

MEK hot or cold just ain’t getting it for me….

[Tom_E]

Oooh - KB, you beat me to it, but that was a help . I got an unused can of MEK sit'n around. Keep us posted - it's expensive though but interested to see if it works.

[Sledgestone]

I had hoped that you guys would have held out until I’ve had the time to do more testing

[Agro]

Vinh stopped fully removing SST-40 domes, now he shaves them. He says it gives him the same throw, but better output.

[Jerommel]

@Sledgestone

I had hoped that you guys would have held out until I’ve had the time to do more testing

Haha

Your picture of the nitro thinner dedomed SST-40 next to the toluene dedomed SST-40 shows exactly why we should use toluene.
The greenish tint is all to familiar to chemical dedomers, we all want the other result (right one in the picture).
Also, the fact that a tough dome like SST-40 is gone after a short while, and without heating the solvent, is another reason to get pure toluene.

[led4power]

Hotspot with toluene dedoming is also visibly larger, which should mean silicone is not completely removed, smaller tint shift also indicates that.

[Tangra]

What driver can I use for this diode to achieve 6V Vf?

[Jerommel]

@led4power

Hotspot with toluene dedoming is also visibly larger, which should mean silicone is not completely removed, smaller tint shift also indicates that.

Hmm… You might be right…

[Sledgestone]

This could also be because of different C8 hosts. I couldn’t completely screw the bezel down on the Toluene one. So it might just be different focus.

Edit: I’ll swap the mcpcb in both host and check if it makes a difference on the hotspot.

[giorgoskok]

@Jerommel

@Sledgestone

I had hoped that you guys would have held out until I’ve had the time to do more testing

Haha

Your picture of the nitro thinner dedomed SST-40 next to the toluene dedomed SST-40 shows exactly why we should use toluene.
The greenish tint is all to familiar to chemical dedomers, we all want the other result (right one in the picture).
Also, the fact that a tough dome like SST-40 is gone after a short while, and without heating the solvent, is another reason to get pure toluene.

I use only nitro paint thinner and tint shift is nearly invisible . I don’t know why he got such a warm tint , seems really weird …

[Sledgestone]

Yeah, that is weird. But as far as I know everyone else who uses nitro thinner gets the green tint shift. Do you boil the liquid? Does yours contain acetone?

What do you mean by tint shift is nearly invisible? Does it still turn slightly green?

[giorgoskok]

Just nitro paint thinner , no boiling . No , it’s not getting green …

I don’t know what it contains . Will try to post beamshot soon