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Old 07-13-2010, 03:25 AM #1
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Default Long overdue introduction

Hello fellow forum members!

itw3ak aka lasermole speaking. (i only have one account as itw3ak just fyi)

I have been a member here for about a year now and I was so excited to jump right into all of this laser goodness I never started at the beginning.

I came to the forum originally to talk with members, learn, and purchase things for my first DIY 405nm build. JayRob was and has since been very helpful, Daguin you too. Many tid bits of info here have taught me a great deal about the science behind the laser hobby.

An error in judgment and perhaps a practice not worth perusing are what brought me to post this introduction tonight. Only moments ago I destroyed a $180 laser by A:Not using my better judgement of safety, B:Altering a device that was fine left alone. I was POT modding a 5mW CNI 405nm pen that in the past I had modded without damage and was quite delighted. It turn it into a whole new device, it now was capable of burning, etc.
Tonight I changed out the batteries for a new set of rechargeable CR2 3.0v's I just bought in the hope that I would never again have to buy more primary CR2's at exuberant costs. Well it worked out ok for most of the day, the laser was brighter then ever and burned like the dickens. Only just moments ago it dimmed and died. Desperately I yanked the batteries out hoping the new RCR2's were just dying, nope...I killed it

Are any of you familiar with thinkgeek.com? And "bucky balls" well they are small round powerful magnets that I often use to make a quick dirty "wire" connection between batteries as it "holds" them together. Turns out they are a little too powerful with minds of their own. While not paying attention working on the laser driver and diode the magnets grabbed hold of each other and made a perfect short circuit in the brand new RCR2's ! I started to smell burning and looked over to find my batteries melting their plastic casings and nearly ready to explode! I was able to find a piece of cardboard and separate the short in time to avoid an really dangerous mess.

To make a long post short, This was dumb in many ways. I should have just left it alone. And this has given me a great deal of respect for the danger of jumping in, and the danger of Li-ion batteries when not used properly.

-$200 later I thank all of you for your wealth of information and I warn new users of lasers and this forum to be safe, take your time, and don't forget to ask senior members for advice when you are not sure! Let my example teach everyone something.

Thanks everyone.
P.S. anyone got a 12x 405nm diode they wana sell?


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"445nm is the new 532nm"
My Lasers
5mW 635nm pen with focus amazing1.com
5mW 535nm pen thinkgeek.com
5mW 405nm pen CNIlaser.com dead
120mW 405nm pen lazershop.co.uk
100mW 535nm torch
200mW 650nm Waterproof flashlight laser with focus O-like.com
400mW @300mA 405nm MXDL w 405-G-1 glass lens mod JayRob heatsink BDR-203 8x diode dead

Spyder III Pro Arctic G1 1.25Watts (who knows what it really is) ordered 6/19/10 (Received on 8/5/2010)
Spyder III Pro Arctic G2 ordered 6/19/10 (Received on 10/6/2010)
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Old 07-14-2010, 02:33 AM #2
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Default Re: Long overdue introduction

Welcome to the forum.
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650nm=33
635nm2
532nm=14
445nm=2
405nm=13
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Old 07-14-2010, 02:49 AM #3
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Default Re: Long overdue introduction

Great introduction. Glad you didn't get burned, and sorry to hear about your pot-modded CNI pen dying. It sounds like you got it upwards of 50mW before it died.
I have a theory that the new batteries over-drove the driver and LED the diode. I killed my dilda v1 using 2x 3.6v CR2's a few months ago

I know you have been here a year, but
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Old 07-14-2010, 04:18 AM #4
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Default Re: Long overdue introduction

I use those strong rare earth magnets for my CR2 battery mod with my LOC build but I use barrel shaped with flat top and bottom.

I'm not totally sure I understand how it shorted out? Did you have 2 magnets stacked in between the batteries then they rolled next to each other?

Glad to hear you didn't get seriously hurt, those Li Ions can be pretty dangerous.
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Old 07-19-2010, 07:25 AM #5
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Default Re: Long overdue introduction

Thanks for the welcomes guys!
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"445nm is the new 532nm"
My Lasers
5mW 635nm pen with focus amazing1.com
5mW 535nm pen thinkgeek.com
5mW 405nm pen CNIlaser.com dead
120mW 405nm pen lazershop.co.uk
100mW 535nm torch
200mW 650nm Waterproof flashlight laser with focus O-like.com
400mW @300mA 405nm MXDL w 405-G-1 glass lens mod JayRob heatsink BDR-203 8x diode dead

Spyder III Pro Arctic G1 1.25Watts (who knows what it really is) ordered 6/19/10 (Received on 8/5/2010)
Spyder III Pro Arctic G2 ordered 6/19/10 (Received on 10/6/2010)
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Old 07-19-2010, 07:35 AM #6
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Default Re: Long overdue introduction

Welcome, and sorry to hear about your loss. It's the never ending saga, that goes on and on. Buy laser parts, sometimes good luck. Sometimes not. But as time goes on, more good luck than bad ;-)
I dropped a 850mah ultrafire on the concrete garage floor and it exploded like a firecracker. Funny thing was, it was on the Fourth.
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Old 07-19-2010, 07:56 AM #7
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Default Re: Long overdue introduction

Man, stay FAR AWAY from shorted LiIon batteries. I kind of worry sometimes because I use so may of them in my laser collection. Recently I bought a bunch of those little plastic cases from DX because the last thing I need is a short happening in a drawer full of ~50 LiIon batteries. At ~$1.50 a case, it's a pretty good investment to just keep something real bad from happening.
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3392nm:REO LHIP HeNe 2mW ∙ 980nm:OLIKE 155mW

808nm:OLIKE 200mW ∙ JETL PLC 600mW(682pk)
780nm:OLIKE 120mW
685nm:18650 47mW
671nm:PGL3M 281mW DPSS ∙ PGL3C 278mW
655nm:LOC 254mW ∙ OLIKE 221mW ∙ Yob 320mW
638nm:Sanyo 40mW ∙ HL63133 200mW ∙ PGL3C 463mWpk ∙ ML520 700mW
633nm:JDS1145 HeNe 28mW ∙ JDS1145 HeNe 26mW
612nm:MG 05LOR151 HeNe 3mW ∙ REO LSTP 3mW
609nm:REO LHOR 1mW
604nm:REO LSTP 2mW
594nm:Rigel 3mW ∙ LG PGL3C 15mWpk ∙ Lasos 7512 3mW ∙ CNI MGL3 58mWpk
589nm:CNI PGL3C 106mW ∙ CNI PGL3C 85mW
561nm:CNI PGL3C 30mW(41pk)
556nm:CNI PGL3C 20mW(22pk)
544nm:JDS1675P HeNe 2mW ∙ REO LHGR 2mW ∙ Lasos 7786 2mW
532nm:PGL3C 150mW(180pk) ∙ PGL3C 578mWpk ∙ PLC 440mWpk
515nm:JDS 221420GL ArI 30mW
510nm:52mW DG#2 ∙ 50mW 26650 DG
488nm:Nlx DPSS 7mW ∙ JDS 2214 ArI 40mW ∙ JDS FCD488 DPSS 25mW
ML:MG 65A106025 ArI ML 115mW
476/480nm:Nichia Diode 28mW
473nm:PGL3A 45mW(80pk) ∙ PGL3C 110mWpk ∙ PGL3C 95mWpk ∙ RPLB-25 60mWpk
465nm:DTR NDB7676 2.03w
458nm:JDS 2214VL ArI 8mW ∙ JDS 2214VL ArI 12mW ∙ RHD Diode 1.7W
452nm:Osram SM 47mW
445nm:Yob 1410mW ∙ Polaris 156mW ∙ PGL3C 1200mW ∙ DTR-EHG 32650 2136mW
405nm:Yob 630mW ∙ Qfox 750mW ∙ JETL PLC 780mW
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