Learning to weld with a non-aircraft project

Don't know much about the science of it, but I know that the different types
of laser protective glasses that I've been issued in the military are not
dark at all. They are simple plastic safety glasses with a very light
colored, slightly reflective coating. I assume it employs some sort of
polarizing or refractory principle to disrupt the beam. We never carry
them.

"Rich S." wrote in message
...
"Richard Lamb" wrote in message
...

Amazing how bright that 1/20000 second can be, isn't it.

My learned brother and I were discussing those hoods one day and I axed
him
if that is the technology used in the military to prevent eye damage from
laser attacks. IIRC, he told me that a laser could burn out your optic
nerve
before the glass wen t dark.

That laser light must be a lot faster than reg'lar light, huh?

Rich S.

"Corky Scott" wrote in message
...
On Tue, 23 Mar 2004 09:55:04 -0600, Russell Kent
wrote:

Corky,
At the risk of sounding completely naive (I know nothing of welding)
couldn't you replace the lens/filter in the full face shield you were
using
with a TM2000 lens/filter?

Russell Kent

Ah, sorry, I did not describe the face shield properly: It's a full
plexiglass shield, not a face shield with a little window in it.

Yes, had it been the face shield with the window in it, I could have
replaced that window with the tinted glass from Tinman. But I would
have experienced the same problematic cutting off of the lower field
of view that I need for proper focusing.

Using the plexiglass face shield, you don't have to worry about
cutting off your field of vision, the entire shield is see through
tinted plastic.

Does that explain things better?

Corky Scott

Why don't you get a pair of custom bifocals? You can get them with the
bottom 2/3rds of the lens the strong part, with just a bit over the top for
distance vision. I have a pair like that, and the difference is remarkable.
No more stiff neck.
--
Jim in NC


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On Wed, 24 Mar 2004 00:23:21 -0500, "Morgans"
wrote:


"Corky Scott" wrote in message
...
On Tue, 23 Mar 2004 09:55:04 -0600, Russell Kent
wrote:

Corky,
At the risk of sounding completely naive (I know nothing of welding)
couldn't you replace the lens/filter in the full face shield you were
using
with a TM2000 lens/filter?

Russell Kent

Ah, sorry, I did not describe the face shield properly: It's a full
plexiglass shield, not a face shield with a little window in it.

Yes, had it been the face shield with the window in it, I could have
replaced that window with the tinted glass from Tinman. But I would
have experienced the same problematic cutting off of the lower field
of view that I need for proper focusing.

Using the plexiglass face shield, you don't have to worry about
cutting off your field of vision, the entire shield is see through
tinted plastic.

Does that explain things better?

Corky Scott

Why don't you get a pair of custom bifocals? You can get them with the
bottom 2/3rds of the lens the strong part, with just a bit over the top for
distance vision. I have a pair like that, and the difference is remarkable.
No more stiff neck.
--
Jim in NC

Didn't know such things existed. Hang around in this group long
enough and you learn all kinds of stuff.

I'll check into it, thanks.

Corky Scott