Welding helmets
 

Hi all,

Been thinking it's about time I got one of those auto-darkening helmets.
Just a bit concerned about that initial flash that's supposed to trigger
the auto-darken feature. I can't see how it can be fast enough to
eliminate exposure to that first bright flash. Anyone used one? Comments
on their efficacy?

cheers.

Welding helmets
 

On 15/08/2018 19:03, Chris wrote:

Hi all,

Been thinking it's about time I got one of those auto-darkening helmets.
Just a bit concerned about that initial flash that's supposed to trigger
the auto-darken feature. I can't see how it can be fast enough to
eliminate exposure to that first bright flash. Anyone used one? Comments
on their efficacy?

cheers.

When, many years ago, I bought a cheap one I had the same concerns. Mine
gets used infrequently but always works. Sooo much better than the dark
glass helmets.

Welding helmets
 

On 15/08/2018 19:03, Chris wrote:

Hi all,

Been thinking it's about time I got one of those auto-darkening helmets.
Just a bit concerned about that initial flash that's supposed to trigger
the auto-darken feature. I can't see how it can be fast enough to
eliminate exposure to that first bright flash. Anyone used one? Comments
on their efficacy?

cheers.


They just work. Mine's a very cheap one and still reacts so fast that
the flash is unnoticeable.

SteveW

Welding helmets
 

Chris wrote:

Hi all,

Been thinking it's about time I got one of those auto-darkening helmets.
Just a bit concerned about that initial flash that's supposed to trigger
the auto-darken feature. I can't see how it can be fast enough to
eliminate exposure to that first bright flash. Anyone used one? Comments
on their efficacy?

They're excellent for incompetant amateur welders like me, you can
actually see what you're doing as you wave the stick at the metal.

I'm sure they'd have been banned or come with all sorts of warnings if
they don't darken quick enough.

--
Chris Green
·

Welding helmets
 

Chris Green wrote:
Chris wrote:

Hi all,

Been thinking it's about time I got one of those auto-darkening helmets.
Just a bit concerned about that initial flash that's supposed to trigger
the auto-darken feature. I can't see how it can be fast enough to
eliminate exposure to that first bright flash. Anyone used one? Comments
on their efficacy?

They're excellent for incompetant amateur welders like me, you can
actually see what you're doing as you wave the stick at the metal.

I'm sure they'd have been banned or come with all sorts of warnings if
they don't darken quick enough.


I imagine that the glass probably absorbs most of the UV, the LCD side of
things probably just brings the light level down to manageable limits. I
could be wrong of course.

Tim

--
Please don't feed the trolls

Welding helmets
 

Tim+ wrote:

Chris Green wrote:

I'm sure they'd have been banned or come with all sorts of warnings if
they don't darken quick enough.

I imagine that the glass probably absorbs most of the UV, the LCD side of
things probably just brings the light level down to manageable limits. I
could be wrong of course.

If you look and AvE's (Arduino vs Evil) videos on youtube, he did a few
on LCD welding helmets, looking at the detection vs darkening times,
transmission of IR/UV/visible light etc.

Welding helmets
 

On 15/08/2018 19:03, Chris wrote:

Hi all,

Been thinking it's about time I got one of those auto-darkening helmets.
Just a bit concerned about that initial flash that's supposed to trigger
the auto-darken feature. I can't see how it can be fast enough to
eliminate exposure to that first bright flash. Anyone used one? Comments
on their efficacy?

I have a fairly cheap one, and it seems fine. Note they protect you from
the UV even when "clear" so you don't need to worry about that bit.
Can't say have ever had the feeling of being "flashed" though one.


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

Welding helmets
 

On 15/08/2018 19:03, Chris wrote:

Hi all,

Been thinking it's about time I got one of those auto-darkening helmets.
Just a bit concerned about that initial flash that's supposed to trigger
the auto-darken feature. I can't see how it can be fast enough to
eliminate exposure to that first bright flash. Anyone used one? Comments
on their efficacy?

cheers.

Don't worry about it, even cheap ones are fine. And make life *so* much
easier for the amateur. I guess they react in about a millisecond, which
is 100 times faster than your blink reflex. Remember it is an energy,
not a brightness, thing.

Welding helmets
 

On 15/08/18 19:03, Chris wrote:

Hi all,

Been thinking it's about time I got one of those auto-darkening helmets.
Just a bit concerned about that initial flash that's supposed to trigger
the auto-darken feature. I can't see how it can be fast enough to
eliminate exposure to that first bright flash. Anyone used one? Comments
on their efficacy?

cheers.

I've used one, it was fine. Better than my welding :-)

Welding helmets
 

Chris explained on 15/08/2018 :
Been thinking it's about time I got one of those auto-darkening helmets.
Just a bit concerned about that initial flash that's supposed to trigger
the auto-darken feature. I can't see how it can be fast enough to
eliminate exposure to that first bright flash. Anyone used one? Comments
on their efficacy?

I bought one around ten years ago and they make it so much easier. I
always struggled to get the rod into place, then drop the helmet. Now I
can see, to get the rod spot on. I've not noticed any delay in
darkening, but my helmet has two setting pots which I have never
bothered to experiment with.

Even supposing there is some delay, the slight exposure has to be an
improvement on the accidental flash I would sometimes get whilst trying
to align the rod to the job.

Welding helmets
 

Do not they actually have an inbuilt UV filter there all the time to prevent
damage to the eye by non visible light? I'm thinking back to my old views of
Tomorrows world here!
Brian

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"Chris" wrote in message
...

Hi all,

Been thinking it's about time I got one of those auto-darkening helmets.
Just a bit concerned about that initial flash that's supposed to trigger
the auto-darken feature. I can't see how it can be fast enough to
eliminate exposure to that first bright flash. Anyone used one? Comments
on their efficacy?

cheers.

Welding helmets
 

On 15/08/2018 19:03, Chris wrote:

Hi all,

Been thinking it's about time I got one of those auto-darkening helmets.
Just a bit concerned about that initial flash that's supposed to trigger
the auto-darken feature. I can't see how it can be fast enough to
eliminate exposure to that first bright flash. Anyone used one? Comments
on their efficacy?

cheers.


they are and they do it fast enough, marvellous bit of kit.

Welding helmets
 

critcher wrote:
On 15/08/2018 19:03, Chris wrote:

Hi all,

Been thinking it's about time I got one of those auto-darkening helmets.
Just a bit concerned about that initial flash that's supposed to trigger
the auto-darken feature. I can't see how it can be fast enough to
eliminate exposure to that first bright flash. Anyone used one? Comments
on their efficacy?

cheers.


they are and they do it fast enough, marvellous bit of kit.
Here is a question, How soon after cataract surgery can I start using
one again?(opp last monday)

Welding helmets
 

"FMurtz" wrote in message
...
critcher wrote:
On 15/08/2018 19:03, Chris wrote:

Hi all,

Been thinking it's about time I got one of those auto-darkening helmets.
Just a bit concerned about that initial flash that's supposed to trigger
the auto-darken feature. I can't see how it can be fast enough to
eliminate exposure to that first bright flash. Anyone used one? Comments
on their efficacy?

cheers.


they are and they do it fast enough, marvellous bit of kit.
Here is a question, How soon after cataract surgery can I start using one
again?(opp last monday)

Did you get the surgery on medicare or your health insurance ?

Welding helmets
 

On Fri, 17 Aug 2018 03:11:40 +1000, cantankerous geezer Rot Speed blabbered,
again:


they are and they do it fast enough, marvellous bit of kit.
Here is a question, How soon after cataract surgery can I start using one
again?(opp last monday)

Did you get the surgery on medicare or your health insurance ?

IOW, you haven't the foggiest ...but you will open your stupid gob anyway!
tsk

--
Richard addressing Rot Speed:
"**** you're thick/pathetic excuse for a troll."
MID:

Welding helmets
 

FMurtz Wrote in message:
critcher wrote:
On 15/08/2018 19:03, Chris wrote:

Hi all,

Been thinking it's about time I got one of those auto-darkening helmets.
Just a bit concerned about that initial flash that's supposed to trigger
the auto-darken feature. I can't see how it can be fast enough to
eliminate exposure to that first bright flash. Anyone used one? Comments
on their efficacy?

cheers.


they are and they do it fast enough, marvellous bit of kit.
Here is a question, How soon after cataract surgery can I start using
one again?(opp last monday)


Maybe you need a new one too?
--
--
Jim K


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