SL JR Luxeon. Unbreakable polycarbonate lens broken?

Hi all,

I currently own a streamlight JR luxeon. One day i decided to duracoat my steamlight JR luxeon and i simply removed the batteries and tailcap, ductape the polycarbonate lens and then proceed to degrease my JR with Brake Cleaner and then spray on the coating via airbrush. After the application of the coating, i accidently dropped the JR twice on a heater (i am getting old!). Proceed to baked it at 140F for 2 hours. (the LED and circuitry are in there too)

After all is done, when i removed the ductape, to my horror i found a few cracks on the Unbreakable polycarbonate lens. Any idea what went wrong? Is it the heat, chemicals, or the drop? Any theories would be nice too. Plus my friend had a JR too and he told me the lens cracked too presumably with normal usage(i didn't personnally witness the aftermath though)

Thanks for looking,
Marc

Re: Unbreakable polycarbonate lens broken?

Not sure which of these (or if all of them) did it but, Between the exposure to the cleaning fluid, the fumes from the paint, the drop, and the baking, I'm not surprised the window suffered damage. Sorry.

Re: Unbreakable polycarbonate lens broken?

Weird thing is my friend cracked his too... Maybe its not so "Unbreakable" as it says.

Did anyone cracked theirs with no appearent reason?

Mine hasn't cracked, but seems dim, and scratched up pretty badly.

It's the chemical. CDs are also made from polycarbonate. Spray the brake cleaner on a CDr and see what happens.

good suggestion, sadly though, i have no spare CD sitting around

Handlobraesing said:

It's the chemical. CDs are also made from polycarbonate. Spray the brake cleaner on a CDr and see what happens.

Click to expand...

Hahaha....

I just HAD to read this

Atom has a unique reputation of being able to break just about ANYTHING. Period. Luckily he came up with a way to re-coat the lights

You could get a good job stress-testing stuff. If it survives you, it will survive ANYTHING

Reminds me of a colleague.. he got a rep for being able to blow up whatever electronics he laid his hands on. Bad thing - he was working in IT

:laughing:

My reputation is tarnish if i ever convert to a shelf queen spectator.

AtomSphere, AKA, Flashlight killer. With a grin while doing it

How is your colleague going to survive in a occupation that needs him/her to fix things but he/she prefers to blow it up?:laughing:

KevinL said:

Hahaha....

I just HAD to read this

Atom has a unique reputation of being able to break just about ANYTHING. Period. Luckily he came up with a way to re-coat the lights

You could get a good job stress-testing stuff. If it survives you, it will survive ANYTHING

Reminds me of a colleague.. he got a rep for being able to blow up whatever electronics he laid his hands on. Bad thing - he was working in IT

Click to expand...

Anyone knows if the degreaser will affect rubber or silicone parts of a flashlight like the buttons? I was thinking of sending my bare Al modified LionCub to him to DuraCoat (DC) but am now having second thoughts with regards to his 'flashlight killer' rep! :sweat: And instead of DC'ing my flashlight he might DC it (Destroyed Completely)!

Anyone else has good track experience or is a qualified DuraCoater here?

Promise I'll be gentle

Seriously, I also want to know the answer. I'll duracoat more stuff just to get myself firmilar with the proceedure.

Is it the lens or the NX05 optic that broke? Looks like the optic.

Definitely the brake cleaner. Try isopropyl alcohol or vm&p naptha, fed. spec. thinner TT-N-95a type 2 if you can get it.

Be-careful even with isopropyl alcohol. It can make acryic crack and fall apart. It should be safe for most other plastics though. I'd just diss-asemble the light next time... It's not hard at all.. just inscrew and dump out the stuff...

Certain Chemical solvents DESTROY/FRY polycarbnate instantly. Certain aromatic hydrocarbons. Metyl Ethyl ketone or Xylene or Methylene Chloride. Nothing is indestructable...:thumbsdow

Not easy.... THe SL JR Luxeon's lens is there permenantly. I can't just unscrew it out. Thats why it has to go along in the ride to chemical hell.

IsaacHayes said:

Be-careful even with isopropyl alcohol. It can make acryic crack and fall apart. It should be safe for most other plastics though. I'd just diss-asemble the light next time... It's not hard at all.. just inscrew and dump out the stuff...

Click to expand...

AtomSphere said:

:laughing:

My reputation is tarnish if i ever convert to a shelf queen spectator.

AtomSphere, AKA, Flashlight killer. With a grin while doing it

How is your colleague going to survive in a occupation that needs him/her to fix things but he/she prefers to blow it up?:laughing:

Click to expand...

I remember your beat up C3 and various Turboheads.. yes you would slaughter a SRTH so maybe it is better you don't have one

Last I heard, my colleague changed jobs too :naughty: