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Old 07-08-2016, 03:39 PM #17
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Default Re: is this acceptable?

So iam thinking if projectors have what was it 24 diodes in them I could sell some and that can off set the cost of buy it


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Old 07-08-2016, 03:41 PM #18
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Default Re: is this acceptable?

Not all projectors have laser diodes in for one thing, and second you don't know what laser is inside the unit. I would highly recommend asking DTR for advice before paying out on a projector, as that is how he gets most of his diodes.
Good luck
__________________
Notable products/sites:

Jet Lasers offers various high quality Diode/DPSS Portables in their PL-E Pro hosts. Jet Lasers are known for their quality and are respected on LPF.
Jetlasers PLE Pro's

If you are after an RGB module, you can't go wrong with Optlasers. Their 400mW model is very high quality.
Optlasers RGB Modules

Optotronics offers some of the highest output DPSS Portable Greens on the market. Their 1.4W RPL-II is by far their most amazing product and is known to be overspec.
Optotronics RPL 532nm DPSS Portables

Dragon Lasers offers the best option for 589nm (Yellow) Laser pointers.
Dragon Lasers Yellow Laser Pointers

Sanwu are known to be very high quality and every newcomer should check them out.
Sanwu Home

Bang good is a good source for many electrical items and are often cheap and reliable.
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For reliable safety goggles visit Survival Laser. Use LPF445 for a 10% member discount.
Eagle Pair Safety Goggles

For more sites and information please check out this thread.
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Old 07-08-2016, 03:53 PM #19
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Default Re: is this acceptable?

Well iam not really sure when I'll do. It maybe a year from now. But yeah I'll definitely ask him what kind are good
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Old 07-08-2016, 03:56 PM #20
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Default Re: is this acceptable?

That's fine, I just don't want you wasting your money without checking. I have done things like that in the past when I should of inquired first.
I'll look forward to seeing it when you can afford it.
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Jetlasers PLE Pro's

If you are after an RGB module, you can't go wrong with Optlasers. Their 400mW model is very high quality.
Optlasers RGB Modules

Optotronics offers some of the highest output DPSS Portable Greens on the market. Their 1.4W RPL-II is by far their most amazing product and is known to be overspec.
Optotronics RPL 532nm DPSS Portables

Dragon Lasers offers the best option for 589nm (Yellow) Laser pointers.
Dragon Lasers Yellow Laser Pointers

Sanwu are known to be very high quality and every newcomer should check them out.
Sanwu Home

Bang good is a good source for many electrical items and are often cheap and reliable.
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For reliable safety goggles visit Survival Laser. Use LPF445 for a 10% member discount.
Eagle Pair Safety Goggles

For more sites and information please check out this thread.
Which company should I buy from? By Sta




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Old 07-08-2016, 03:58 PM #21
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Default Re: is this acceptable?

Quote:
Originally Posted by CurtisOliver View Post
Not all projectors have laser diodes in for one thing, and second you don't know what laser is inside the unit. I would highly recommend asking DTR for advice before paying out on a projector, as that is how he gets most of his diodes.
Good luck

^^This^^ ... as has already been suggested to you multiple times.

Not sure you're going to find many broken Laser DLP projectors for that sort of price. For starters they're going to be lasting a lot longer than the old lamp based ones - I think a lot of people would buy a lamp based projector, use it for 4-5 years until the lamp dies and then just buy a new projector rather than pay $300 for a new lamp, ditching the old one for cheap in the process. New DLP projectors are all LED/Laser so they don't have a lamp that dies after 3,000 hours. Doesn't hurt to look of course - just don't get your hopes up.

You're new to lasers, start small and work your way up. There's no need to jump straight into a 5W build without having experience with other lasers at lower powers first, that's asking for trouble.

Also ... I must ask, what age are you? You mentioned something about trading with a kid at school?
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Last edited by diachi; 07-08-2016 at 03:59 PM.
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Old 07-08-2016, 04:02 PM #22
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Default Re: is this acceptable?

Quote:
Also ... I must ask, what age are you? You mentioned something about trading with a kid at school?
I was thinking about that as well. That is why I made sure he knew it was dangerous with my comment
Quote:
The other point to make is how incredibly dangerous those diodes are. They can run at roughly 6.8W so nearly 7 times more than your 1 watt laser. But the power might as well be 20x more.
These diodes are not to messed with.
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Notable products/sites:

Jet Lasers offers various high quality Diode/DPSS Portables in their PL-E Pro hosts. Jet Lasers are known for their quality and are respected on LPF.
Jetlasers PLE Pro's

If you are after an RGB module, you can't go wrong with Optlasers. Their 400mW model is very high quality.
Optlasers RGB Modules

Optotronics offers some of the highest output DPSS Portable Greens on the market. Their 1.4W RPL-II is by far their most amazing product and is known to be overspec.
Optotronics RPL 532nm DPSS Portables

Dragon Lasers offers the best option for 589nm (Yellow) Laser pointers.
Dragon Lasers Yellow Laser Pointers

Sanwu are known to be very high quality and every newcomer should check them out.
Sanwu Home

Bang good is a good source for many electrical items and are often cheap and reliable.
Bang Good Home

For reliable safety goggles visit Survival Laser. Use LPF445 for a 10% member discount.
Eagle Pair Safety Goggles

For more sites and information please check out this thread.
Which company should I buy from? By Sta




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Wavelength to RGB Converter
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Old 07-08-2016, 04:34 PM #23
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Default Re: is this acceptable?

Iam 17 and I am in a technical school for engineering mostly mechanical but iam also interested in electronics in general and yes I know how dangerous it is it's not my first dangerous build I have also made a coil gun a few tasers and a small rail gun, I have also made a hydrogen generator and a 3 rockets i know a bit about safety as I am also OSHA level 2 certified but it's always good to be reminded about safety lol
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Old 07-08-2016, 04:50 PM #24
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Default Re: is this acceptable?

Quote:
Originally Posted by MG100 View Post
Iam 17 and I am in a technical school for engineering mostly mechanical but iam also interested in electronics in general and yes I know how dangerous it is it's not my first dangerous build I have also made a coil gun a few tasers and a small rail gun, I have also made a hydrogen generator and a 3 rockets i know a bit about safety as I am also OSHA level 2 certified but it's always good to be reminded about safety lol
Ok, just checking!

Entirely different danger, but if you can figure out how to handle coil guns, tasers, small rail guns, hydrogen generators and rockets without hurting yourself then you can figure out how to handle lasers just fine too. Plenty of safety resources on here that you can read through.

Maybe think about posting your other projects in the off-topic section - lots of us would be interested in seeing them! I've been wanting to build a decent coil gun for ages and a rail gun sure sounds like fun too.

FYI - you're supposed to be 18 to buy lasers from most places... If it causes any trouble in the meantime you can always get a parent/guardian to sort it out until you reach 18. I started out at 14 or so (8 years ago!) and it was never an issue. My parents were more worried about the bags of KNO3 and HV power supplies that were showing up... I'm definitely on a list somewhere.
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405nm | Banggood LT-850 | "5mW" | Review Unit | Review WIP
445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
450nm | LaserPointerStore - Thor H2 | 1W(?) | Review Unit | >>Review<<
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | Review Unit | 3mW metered | >>Review<<
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD-850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2



Check out my Reddit Subreddit! >>/r/laserpointers<<


Last edited by diachi; 07-08-2016 at 04:52 PM.
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Old 07-08-2016, 05:02 PM #25
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Default Re: is this acceptable?

Don't try making a rail gun it's not worth the trouble I worked for a solid week and and only got it to shoot a 1/4" 1" long rod about 10' and it was just a pain in general
The coil gun was easy as long as you keep it down to 1 segment of coils. I can't really post my old projects because I cannibalize one to make another and my last one the hydrogen generator got to dangerous for my parents and they made me take it apart after they saw a a bottle full of hydrogen/oxygen blow up in the backyard
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Old 07-08-2016, 05:04 PM #26
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Default Re: is this acceptable?

PS I ad beginning to think this site was for people because 1/2 comments are people saying how dumb the other guy is, it good to know iam not alone
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Old 07-08-2016, 05:06 PM #27
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Default Re: is this acceptable?

Quote:
Originally Posted by MG100 View Post
Don't try making a rail gun it's not worth the trouble I worked for a solid week and and only got it to shoot a 1/4" 1" long rod about 10' and it was just a pain in general
The coil gun was easy as long as you keep it down to 1 segment of coils. I can't really post my old projects because I cannibalize one to make another and my last one the hydrogen generator got to dangerous for my parents and they made me take it apart after they saw a a bottle full of hydrogen/oxygen blow up in the backyard

Yeah - if I'm ever going to do the rail gun I'm going big. It's the only way to get them to work decently.

I was planning a whole bunch of stages for the coil gun - but that's another project on the back burner. Figure I'll get around to it if I ever get a 3D printer as that makes much of the construction easier and more accurate. Too many projects on the back burner.

Fair enough - I know how that goes. You should post future projects in that case, there will be interest!

They're probably worried that a SWAT team will show up... That's how these things go in this day and age. That stuff's a hell of a lot of fun though.
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405nm | Banggood LT-850 | "5mW" | Review Unit | Review WIP
445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
450nm | LaserPointerStore - Thor H2 | 1W(?) | Review Unit | >>Review<<
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | Review Unit | 3mW metered | >>Review<<
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD-850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2



Check out my Reddit Subreddit! >>/r/laserpointers<<

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Old 07-08-2016, 05:21 PM #28
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Default Re: is this acceptable?

Quote:
Originally Posted by MG100 View Post
So iam thinking if projectors have what was it 24 diodes in them I could sell some and that can off set the cost of buy it
The laser you made looks pretty good!

You are way better off just getting some odds jobs to pay for parts then buying a diode from DTR.

Maybe search the forum search for harvesting diodes or projector diodes --is not so easy to do and is a lot of specialized careful work and testing even if you know what your are doing.

Projectors run $600-900 and up to begin with and nobody is going to want to buy "used" diodes from a broken projector --that is if you can even find one which is doubtful.
Scroll down and read the words in blue on this DTR page to get some idea about projectors and diodes:
https://sites.google.com/site/dtrlpf...45-m140-didoes

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Old 07-08-2016, 05:28 PM #29
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Default Re: is this acceptable?

What's so wrong with diodes being used? How Are they different from a brand new one? Practically everything I do is with used or broken parts and I haven't had a problem, also the diode iam using in that laser is used for reportable 600 hours.
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Old 07-08-2016, 05:35 PM #30
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Default Re: is this acceptable?

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Originally Posted by MG100 View Post
What's so wrong with diodes being used? How Are they different from a brand new one? Practically everything I do is with used or broken parts and I haven't had a problem, also the diode iam using in that laser is used for reportable 600 hours.
They may work fine - I think what he's getting at is that people may not want to buy used diodes if you plan on reselling them to cover some of your costs. Especially because we tend to run them at higher currents than they are rated for, which shortens the lifespan as is.

Perhaps for a greatly reduced price people will be interested... Like 50% cheaper than a new diode or some such.
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Last edited by diachi; 07-08-2016 at 05:36 PM.
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Old 07-08-2016, 05:39 PM #31
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Default Re: is this acceptable?

Well I sort of just looking to break even so many we should do a group buy in the future
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Old 07-08-2016, 05:49 PM #32
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Default Re: is this acceptable?

Quote:
Originally Posted by diachi View Post
They may work fine - I think what he's getting at is that people may not want to buy used diodes if you plan on reselling them to cover some of your costs. Especially because we tend to run them at higher currents than they are rated for, which shortens the lifespan as is.

Perhaps for a greatly reduced price people will be interested... Like 50% cheaper than a new diode or some such.
Exactly, diachi. There just is little if any call for "used" in today's world with so many types and wavelengths easily/plentifully available new, tested, and guaranteed/warrantied

Quote:
Originally Posted by MG100 View Post
What's so wrong with diodes being used? How Are they different from a brand new one? Practically everything I do is with used or broken parts and I haven't had a problem, also the diode iam using in that laser is used for reportable 600 hours.
Nothing is "wrong" with them, however you are not going to be able to sell them and not lose money, time , and effort overall---would be very difficult, and time consuming if possible. I would guess you should not count on anything else.
Maybe many years ago when laser diodes were few and far between it might have made some sense. Thousands are available of many types, all different wavelengths, and at relatively low prices. There is no need to reinvent the wheel, in a hgigh risk way, generally, for most people.

The standard that people buy is new unused --as dtr explains: "This diode is a never used diode that is extracted from a brand new out of the box DLP projector. Only running time would be whatever quality control testing was done @ the manufacturer and myself running them briefly to make sure they all are in good working order before being sold."

Would be a lot easier and less risky to just get some work and make a few $s and buy what you need/want.
Why take a chance on a used diode when you can buy a new tested no risk one from a well proven and reliable source for very little more? Time, parts, and and effort to do something with it are the bigger issue and cost.

Last edited by Encap; 07-09-2016 at 01:14 AM.
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