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Old 12-16-2013, 03:24 AM #17
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Default Re: Question on ebay laser pens

Quote:
Originally Posted by Andrew1 View Post
which color would you suggest starting out with then, a red, green, or violet (405nm)

and like 100 mW range?
A red(650nm) in the 100mW will be a good starting laser.

Do you understand laser safety as well? If you do I can recommend a few sites


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655nm: ROITHNER 650 Pointer 5mW
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Old 12-16-2013, 03:27 AM #18
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Default Re: Question on ebay laser pens

I would suggest getting 1 or 2 of the 3 packs I mentioned, it comes with red, green, and purple and its only around $15
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Old 12-16-2013, 03:32 AM #19
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Default Re: Question on ebay laser pens

Quote:
Originally Posted by brendon7358 View Post
I would suggest getting 1 or 2 of the 3 packs I mentioned, it comes with red, green, and purple and its only around $15
He asked for a unit in the 100mW range

For about $40 you can get a good 650nm 100mW laser.

Plus those green eBay pens are over-spec and could maybe put his eyes at risk if he shines it around without being cautions(not saying he won't be).

Also needs to be careful with 100mW of 650.
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Old 12-16-2013, 03:34 AM #20
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Default Re: Question on ebay laser pens

by 100 mW, I did not mean a laser in that range, I'd meant to ask for your opinion as to what wattage you thought would be good for starting out?
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Old 12-16-2013, 03:34 AM #21
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Default Re: Question on ebay laser pens

Quote:
Originally Posted by Tha Greenlander View Post
He asked for a unit in the 100mW range

For about $40 you can get a good 650nm 100mW laser.

Plus those green eBay pens are over-spec and could maybe put his eyes at risk if he shines it around without being cautions(not saying he won't be).

Also needs to be careful with 100mW of 650.
IR works just like a normal laser, but maybe with more divergence, if he isn't pointing it at his face the IR isn't a problem. Also for $30 you can get 2 3 packs and are pretty much guaranteed to get a 100mW is red or violet, and you get the other 4 lasers free

Any wattage is good for starting, the lower the power the more you will be wowed when you get a higher powered one later on. Personally my first "real" laser (not the red ones from the $1 store) was a 532nm from ebay, just like this one, I estimate its power at 30-60mW, I took it apart and broke it before I got an LPM. My second laser was a 200mW(advertized) 650nm, and that one was great for the 6 months it lasted.

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Old 12-16-2013, 03:36 AM #22
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Default Re: Question on ebay laser pens

Quote:
He asked for a unit in the 100mW range
Those 3 pack from ebay can reach 100mw.

Quote:
For about $40 you can get a good 650nm 100mW laser.
And so you can get 3 pens for $15

Quote:
Plus those green eBay pens are over-spec and could maybe put his eyes at risk if he shines it around without being cautions(not saying he won't be).
You worry about those pens being overspec and you recommend a 100mw red?
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Old 12-16-2013, 03:44 AM #23
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Default Re: Question on ebay laser pens

Quote:
Originally Posted by Zeebit View Post
Those 3 pack from ebay can reach 100mw.


And so you can get 3 pens for $15


You worry about those pens being overspec and you recommend a 100mw red?
Did you not read the part of the thread where I asked if he knew Laser Safety?

I wanted to make sure he knew how dangerous lasers are before I point him to a 100mW 650nm...
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Old 12-16-2013, 03:47 AM #24
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Default Re: Question on ebay laser pens

ebay lasers are basically a gamble though

is this kind of what you meant by 3 pack though?

the main laser safety factors are

1) goggles on for anything suspected of being over 5mW (aka ebay pens)
2) don't shine at vehicles/buildings/airplanes/helicopters
3) don't shine at other people/pets

Last edited by Andrew1; 12-16-2013 at 03:50 AM.
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Old 12-16-2013, 03:49 AM #25
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Default Re: Question on ebay laser pens

Quote:
Originally Posted by Andrew1 View Post
ebay lasers are basically a gamble though

is this kind of what you meant by 3 pack though?
Yep.

Do be careful with them though bud
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Old 12-16-2013, 03:51 AM #26
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Default Re: Question on ebay laser pens

*cough*click*cough*

------------------------------

Quote:
Originally Posted by Andrew1 View Post
by 100 mW, I did not mean a laser in that range, I'd meant to ask for your opinion as to what wattage you thought would be good for starting out?
Those ebay pens are a good start . Once you get a feel for it you can get stronger ones.

Quote:
Originally Posted by Andrew1 View Post
ebay lasers are basically a gamble though

is this kind of what you meant by 3 pack though?

the main laser safety factors are

1) goggles on for anything suspected of being over 5mW (aka ebay pens)
2) don't shine at vehicles/buildings/airplanes/helicopters
3) don't shine at other people/pets
Most important for safety is maturity and common sense.

Last edited by Zeebit; 12-16-2013 at 03:53 AM.
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Old 12-16-2013, 03:52 AM #27
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Default Re: Question on ebay laser pens

Ebay pens make very good first lasers IMO. They are cheap, high enough power to have some fun (and get you hooked), but not nearly as dangerous as a 445.

Just something that I wish I would have done. Try getting with a member who owns an LPM, order some ebay pens, have them sent to the member (and LPMed), and then sent to you. That way you know exactly what you have. I'm sure many members would be glad to do this for you, and it would only cost a few extra $ in shipping.

Also, a 100mw green for TheJoker would make an excellent first laser (if you want to pay a little extra for some added QC ).
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Old 12-16-2013, 03:59 AM #28
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Default Re: Question on ebay laser pens

would green lasers be the "safest" to start out with, as they tend to be the brightest when compared to other colors at the same mW, which you think would make it easier to not do something stupid
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Old 12-16-2013, 03:59 AM #29
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Default Re: Question on ebay laser pens

The user not the laser makes it safer.
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Old 12-16-2013, 05:51 AM #30
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Default Re: Question on ebay laser pens

Quote:
Originally Posted by Andrew1 View Post
would green lasers be the "safest" to start out with, as they tend to be the brightest when compared to other colors at the same mW, which you think would make it easier to not do something stupid
Well color won't determine if one is safer then the other. Unless of course you bring IR into the equation those are definitively more dangerous then lasers in the "visible spectrum".

I recommend you get that 3-pack indeed and just be careful around them.

If you follow basic safety rules you shouldn't have any probs
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655nm: ROITHNER 650 Pointer 5mW
635nm: Generic "Laser Pointer" Pen 5mW
593.5nm: LaserGlow Rigel-2 3mW
532nm: Z-Bolt BTG-6-C 5mW
515nm: Generic "Laser Pointer-515P-10" Pen 12mW
473nm: CNI GLP-473 6mW
450nm: Z-Bolt BLP-5-S Pointer 6mW
405nm: Generic "Laser Pointer" Pen 35mW



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"The stars should fall and the earth be riddled, imagine all your problems be seem so little, funny how the world so brittle." -Tribal Seeds
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Old 12-16-2013, 12:35 PM #31
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Default Re: Question on ebay laser pens

Quote:
nm shows the laser's color. Out of all the most common colors blue is considered the best at burning since it can be had for cheap at high powers
Not quite. most people believe violet is the best laser for burning because it has the lowest frequency which translates to a higher energy density. many things come in to play thought like the color of the material you are trying to burn i.e. a red laser will not work as well on a red plastic cup as say a blue laser at equal power. also beam width comes in to play. most lasers beams are too big to be great burners at "infinity" because their energy density is just to low that is why people use lenses to focus them down to a point. things like cheap-o greens that are 50-200mW usually have a thin enough beam to burn by themselves. then again power is power a mW of blue is just as "strong" an a mW of red. hope this helps
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Old 12-16-2013, 12:40 PM #32
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Default Re: Question on ebay laser pens

Quote:
Originally Posted by Blackwolf View Post
Not quite. most people believe violet is the best laser for burning because it has the lowest frequency which translates to a higher energy density. many things come in to play thought like the color of the material you are trying to burn i.e. a red laser will not work as well on a red plastic cup as say a blue laser at equal power. also beam width comes in to play. most lasers beams are too big to be great burners at "infinity" because their energy density is just to low that is why people use lenses to focus them down to a point. things like cheap-o greens that are 50-200mW usually have a thin enough beam to burn by themselves. then again power is power a mW of blue is just as "strong" an a mW of red. hope this helps
Thanks for correcting me BlackWolf

I wasn't entirely sure. I do want him to get the best information available though.
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