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Old 05-20-2009, 06:16 AM #1
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Default Welders Goggles and safety

I'm building the Dorcy Jr Blu-ray design and expect to get the last part (driver) tomorrow. I know that once I've built it, I'll be anxious to test it out. Would welder's goggles (shade rating 14) be OK as a temporary solution until I get my next paycheck and get to buy real certified goggles.
Thanks.

EDIT: I got a certified pair from OEM laser systems a while ago



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Old 05-20-2009, 12:54 PM #2
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No these are no use.

You should use the search button to find out, it's very helpful.

These will cause your pupils to dilate , so that if light does get through them, more of it goes into your eyes.

Regards,

Adam
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Old 05-20-2009, 02:52 PM #3
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Yeah welding goggles are no use for shielding yourself from a laser, but if you have a pair of sunglasses that are built to block UV radiation they may work temporarily until you can get yourself a proper pair of safety goggles.
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Old 05-20-2009, 04:24 PM #4
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Ok cool, it's only a week I have to wait
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Old 05-25-2009, 06:07 PM #5
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Quote:
Originally Posted by MarioMaster View Post
Yeah welding goggles are no use for shielding yourself from a laser, but if you have a pair of sunglasses that are built to block UV radiation they may work temporarily until you can get yourself a proper pair of safety goggles.
This is terrible advice. Sunglasses which block UV are designed to block a very low power density. UV light from the sun is not all concentrated into a 3 mm spot and the glasses are not designed for this nor should you assume they will provide ANY protection whatsoever. This is like recommending a hockey helmet to stop a bullet. The helmet is designed to block blunt force, but the power of the bullet is much more concentrated and wearing the goggles/hockey helmet may give you a false sense of security when somebody points a laser/gun at your head.

PLEASE don't offer safety advice if you are not sure of what you're talking about. No advice is better than bad advice and there's plenty of other people on this forum who know the right answer. You are putting other people's safety at risk when you give incorrect safety advice.
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Old 05-25-2009, 06:29 PM #6
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Quote:
Originally Posted by Justin View Post
This is terrible advice. Sunglasses which block UV are designed to block a very low power density. UV light from the sun is not all concentrated into a 3 mm spot and the glasses are not designed for this nor should you assume they will provide ANY protection whatsoever. This is like recommending a hockey helmet to stop a bullet. The helmet is designed to block blunt force, but the power of the bullet is much more concentrated and wearing the goggles/hockey helmet may give you a false sense of security when somebody points a laser/gun at your head.

PLEASE don't offer safety advice if you are not sure of what you're talking about. No advice is better than bad advice and there's plenty of other people on this forum who know the right answer. You are putting other people's safety at risk when you give incorrect safety advice.

Mario I think you just got your ass handed to you by a kid

EDIT: Unless this isn't justin lawson, in which case you only got your ass handed to you

Further EDIT : I was aware that Welders goggles were designed to STOP UV getting through anyway, so you'd be better with the welders goggles than the sunglasses. Doesn't mean your safe with either, since neither should be used.

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Old 05-25-2009, 07:24 PM #7
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UV glasses, welders or sunglasses, block up to the 400nm range. Blu-Ray's are 405nm. So in reality neither will work. Nothing is worth you eyesight. If you only have to wait a week, than wait.
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Old 05-25-2009, 09:17 PM #8
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Quote:
Originally Posted by Justin View Post
This is terrible advice. Sunglasses which block UV are designed to block a very low power density. UV light from the sun is not all concentrated into a 3 mm spot and the glasses are not designed for this nor should you assume they will provide ANY protection whatsoever. This is like recommending a hockey helmet to stop a bullet. The helmet is designed to block blunt force, but the power of the bullet is much more concentrated and wearing the goggles/hockey helmet may give you a false sense of security when somebody points a laser/gun at your head.

PLEASE don't offer safety advice if you are not sure of what you're talking about. No advice is better than bad advice and there's plenty of other people on this forum who know the right answer. You are putting other people's safety at risk when you give incorrect safety advice.
Gee, it's only been discussed like a billion times here already. Obviously the best solution would be not to use the laser until certified eyewear can be had, but most cases that won't happen. It depends on the glasses. You just have to try some and check the blocking ability. This guy is probably going to still use his laser a bit before he can get real goggles so wearing some high UV factor sunglasses will cut down the 405nm light exposure sharply. The absorb/reflection cutoff while in the near-UV range is still not immediate and provide a good power reduction at 405nm. This is only a temporary solution until proper goggles can arrive.

That's not to say however that sunglasses can be used with any laser. Sunglasses only block a fraction of the incident light for other visible wavelengths so they should not be used. (light attenuation would be insignificant vs the high OD used to protect the eyes from UV radiation)

Last edited by MarioMaster; 05-25-2009 at 09:20 PM.
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Old 05-26-2009, 12:39 AM #9
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thats Justin from laser glow just use the laser out side for a week
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Old 08-11-2009, 03:21 AM #10
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Default Re: Welders Goggles and safety

Has anyone here ever worn a welding mask? One look and you know that it doesn't just attenuate ultraviolet light, but visible also. And they do a damn good job at it, because you can barely see through them at all. In fact, you usually have to get everything into position before you lower the mask because you can't see shit once it's down. Even if they weren't designed to attenuate visible they would still work well enough as 405 nm is heavily attenuated by almost any decent UV filter. It just might not attenuate it quite as well as a lower wavelength, but it's not like the attenuation totally drops off at 400 nm and everything longer gets through. Come on, how could you possible suggest sunglasses over a welding mask? I would rather have the welding mask than any blue laser safety glasses if being safe was the highest priority.
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Old 08-11-2009, 05:02 AM #11
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Default Re: Welders Goggles and safety

Quote:
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Has anyone here ever worn a welding mask? One look and you know that it doesn't just attenuate ultraviolet light, but visible also. And they do a damn good job at it, because you can barely see through them at all. In fact, you usually have to get everything into position before you lower the mask because you can't see shit once it's down. Even if they weren't designed to attenuate visible they would still work well enough as 405 nm is heavily attenuated by almost any decent UV filter. It just might not attenuate it quite as well as a lower wavelength, but it's not like the attenuation totally drops off at 400 nm and everything longer gets through. Come on, how could you possible suggest sunglasses over a welding mask? I would rather have the welding mask than any blue laser safety glasses if being safe was the highest priority.

maybe because you can't see anything out of a welding mask?

The whole point of laser goggles is so that you can still see what you're doing. Otherwise why not just have a block of steel in front of your face, i mean that's like OD900000
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Old 08-11-2009, 06:09 AM #12
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Default Re: Welders Goggles and safety

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maybe because you can't see anything out of a welding mask?

The whole point of laser goggles is so that you can still see what you're doing. Otherwise why not just have a block of steel in front of your face, i mean that's like OD900000
Yes, it might be OD900,000 , but how long would it stand against a 100kW laser? That's the magic with certified safety goggles. Not only do they block a direct hit, but they also withstand the hit for a few seconds before degrading. That's why you should use a very reflective mirror in front of your face instead of a block of steel
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Old 08-11-2009, 06:58 AM #13
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Default Re: Welders Goggles and safety

yea i wish that justin was my kid I'd make him give me a herc a year for my birthday
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Old 08-11-2009, 08:35 AM #14
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Default Re: Welders Goggles and safety

Realy want to use a welding hood for laser's?-- you wont when i show you why.
Keep in mind i doin't own the run of the mill welding equipment sorry.
So let's take a look at what a $500.00 welding hood does with a few little lasers, shal we.
2 lasers:
1... - 650 red dilda (200mw) and 1... -- 532 green (80mw) shined into a speedglas welding hood setting at 14, @ 1/32,000 sec. (realy it doest mater if it's on or off, but just because someone's going to say so. i had it on as most all welding hood's defalt with a shade 3)
Now THE PIC'S ARE A BIT BIG but better for us to see.

http://www.hotlinkfiles.com/files/27...ldinghood1.JPG

http://www.hotlinkfiles.com/files/27...ldinghood2.JPG
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Old 08-11-2009, 03:59 PM #15
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Default Re: Welders Goggles and safety

Gee, it looks like that laser pretty much just went straight through that welding mask.
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Old 08-12-2009, 04:07 AM #16
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Default Re: Welders Goggles and safety

Quote:
Originally Posted by larrball View Post
Realy want to use a welding hood for laser's?-- you wont when i show you why.
Keep in mind i doin't own the run of the mill welding equipment sorry.
So let's take a look at what a $500.00 welding hood does with a few little lasers, shal we.
2 lasers:
1... - 650 red dilda (200mw) and 1... -- 532 green (80mw) shined into a speedglas welding hood setting at 14, @ 1/32,000 sec. (realy it doest mater if it's on or off, but just because someone's going to say so. i had it on as most all welding hood's defalt with a shade 3)
Now THE PIC'S ARE A BIT BIG but better for us to see.

http://www.hotlinkfiles.com/files/27...ldinghood1.JPG

http://www.hotlinkfiles.com/files/27...ldinghood2.JPG
The 25 year old masks in our welding shop work fine, especially for near UV. Are you sure you even turned your fancy mask on?
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