gsomdahl on fri 9 dec 11
My oprtometrist suggested that I use welding glasses when looking into
the kiln at high temperatures primarily because of the risk of damage
from infra-red exposure. Electro-welding also produces ultra-violet
emissions so the glasses may block those depending on the type.
My questions is: have any studies been done of IR and UV emissions from
kilns at different temperature (cones)?
--
This is a post only account. Send replies to "gene" at my ".com" domain nam=
ed "somdahl".
jonathan byler on fri 9 dec 11
there is always IR/UV when you bring something up so hot that it glows
like that. the hotter it is, the more IR/UV it gives off. If you
want specifics as to whether ceramic materials give off more or less
IR/UV light than other materials at those temperatures, I can't help
you. I know some materials are specially formulated not to radiate so
much in those areas of the light spectrum. I wouldn't count on it
being less than normal here.
welding glasses are specifically made to block IR/UV from bright
glowing things to bring them to a safe level. make sure that they are
ANSI safety rated (or whatever agency is responsible for these things
in your part of the world). that means that ostensibly that the
product has been tested and meets basic gov't mandated safety
standards. your tax dollars at work, make sure you benefit from them,
rather than buying cheap junk that doesn't do the job.
On Dec 9, 2011, at 9:24 AM, gsomdahl wrote:
> My oprtometrist suggested that I use welding glasses when looking into
> the kiln at high temperatures primarily because of the risk of damage
> from infra-red exposure. Electro-welding also produces ultra-violet
> emissions so the glasses may block those depending on the type.
> My questions is: have any studies been done of IR and UV emissions
> from
> kilns at different temperature (cones)?
>
> --
> This is a post only account. Send replies to "gene" at my ".com"
> domain named "somdahl".
David Woof on sun 11 dec 11
Hi all=3D2C
Welding lens come in a scale of shades: light to dark=3D2C and if one buys =
th=3D
e small replqacment lens for electric arc welding helmets it is not at all =
=3D
expensive.=3DA0 Couple of dollars or so.
Also one must learn the difference between welders and cutting torch "glass=
=3D
es" (actually better A.K.A. Goggles) used for Gas torch welding=3D2C cuttin=
g=3D
=3D2C and brazing.=3DA0 These are not in the same realm as electric arc wel=
ding=3D
lens where one must protect=3D2C not just the eyes=3D2C but the whole face=
and=3D
any exposed skin from a type of "sun burn" radiation created by the intens=
=3D
e light emissions. With enough exposure One's face will blister and scab be=
=3D
fore its over. And one won't feel the damage until after the damage is done=
=3D
. Scatter and reflected radiation is also a concern to acknowledge.
So if as someone else posted regarding lens being too dark=3D2C try (at you=
r =3D
own risk) a lighter shade after educating yourself about the protection lev=
=3D
els and risk.
Glass workers also have some really fine glasses=3D2C a bit expensive=3D2C =
but =3D
what price does one put on their eye sight?=3DA0 Makes you appear educated =
co=3D
ol dedicated and professional at the next workshop you attend!!! Wear a str=
=3D
ikingly artsy hat and put a bit of swing in your hips as well!!! (oh smile =
=3D
fer gods sake!!!)
Of course electric lighting and peering for hours into TV screens and compu=
=3D
ter monitors has done much damage to many more eyes that the fleeting glimp=
=3D
ses onto a kiln peep hole even over a life time=3D2C which=3D2C can easily =
be m=3D
itigated by educated common sense and a 2x3 inch welding helmet lens=3D2C o=
f =3D
the correct shade=3D2C pocket carried and hand held to the eyes when needed=
.
Love to all=3D2C not just seasonal but the real deal!!! Tu es ma/mon Che'ri=
e =3D
que j'adore
We're going to need lots of it soon!!!
David Woof...Clarkdale=3D2C Arizona....
________________________________________________________
3a. Re: IR and UV when looking at cones
Posted by: "jonathan byler" jebyler2@GMAIL.COM=3D20
Date: Fri Dec 9=3D2C 2011 12:23 pm ((PST))
=3D20
there is always IR/UV when you bring something up so hot that it glows
like that. the hotter it is=3D2C the more IR/UV it gives off. If you
want specifics as to whether ceramic materials give off more or less
IR/UV light than other materials at those temperatures=3D2C I can't help
you. I know some materials are specially formulated not to radiate so
much in those areas of the light spectrum. I wouldn't count on it
being less than normal here.
=3D20
welding glasses are specifically made to block IR/UV from bright
glowing things to bring them to a safe level. make sure that they are
ANSI safety rated (or whatever agency is responsible for these things
in your part of the world). that means that ostensibly that the
product has been tested and meets basic gov't mandated safety
standards. your tax dollars at work=3D2C make sure you benefit from them=
=3D2C
rather than buying cheap junk that doesn't do the job.
=3D20
On Dec 9=3D2C 2011=3D2C at 9:24 AM=3D2C gsomdahl wrote:
=3D20
> My oprtometrist suggested that I use welding glasses when looking into
> the kiln at high temperatures primarily because of the risk of damage
> from infra-red exposure. Electro-welding also produces ultra-violet
> emissions so the glasses may block those depending on the type.
> My questions is: have any studies been done of IR and UV emissions
> from
> kilns at different temperature (cones)?
>
> --
> This is a post only account. Send replies to "gene" at my ".com"
> domain named "somdahl".
=3D20
=3DA0=3DA0=3DA0=3D20
=3D
Vince Pitelka on sun 11 dec 11
David Woof wrote:
"Welding lens come in a scale of shades: light to dark, and if one buys the
small replqacment lens for electric arc welding helmets it is not at all
expensive. . . . So if as someone else posted regarding lens being too dark=
,
try (at your own risk) a lighter shade after educating yourself about the
protection levels and risk."
David -
You post a lot of good information, and then now and then you come up with
something strange out of left field. There is NO reason to EVER use
arc-welding glass to look into kilns. It is way too dark to get any sense
of what is really happening. Gas-welding glasses do exactly what they are
intended to do - they protect your eyes from the UV and IR light produced b=
y
the very bright blue-white central cone of the gas welding or cutting flame=
.
That is all you need to protect your eyes from the light-waves emanating
from the kiln spy-hole. At any welding-supply shop you can get plastic
safety glasses that are the same #5 shade as gas welding goggles, and they
are less expensive and less cumbersome than the goggles and very easy to
use. There is no reason at all to use a darker filter. Again, a #10
arc-welding lens is complete overkill and counterproductive for this
application.
DO NOT use the light-rose or light-purple dydimium glasses made for
glassblowers. They block yellow flare that is a primary concern for
glassblowers, but are not effective against infrared or ultra violet light.
The #5 gas welding lens protects against all three.
This was all clarified in a recent thread. Did you miss that discussion?
- Vince
Vince Pitelka
Appalachian Center for Craft
Tennessee Tech University
vpitelka@dtccom.net
http://iweb.tntech.edu/wpitelka/
David Woof on sat 17 dec 11
Hi Vince=3D2C
If as you say I went out in left field=3D3B it was just because out in left=
f=3D
ield is where the ball got dropped.=3D20
=3D20
And while I have deep respect for you=3D2C your knowledge=3D2C and your dev=
otio=3D
n to Clayart I take serious issue with anyone who lifts words out of the en=
=3D
tire context of my post.
=3D20
So I am not going to invite or get into a line by line debate or defense be=
=3D
cause as usual we are usually saying basicly the same thing in our own way =
=3D
and your beloved and irascible contentiousness and argmentative propensity =
=3D
must this time go with no further response from me.
=3D20
Love=3D2C
=3D20
David
______________________________________________________________
> > > From: Vince Pitelka
> > > Subject: Re: IR and UV when looking at cones
> > >
> > > David Woof wrote:
> > > "Welding lens come in a scale of shades: light to dark=3D2C and if on=
e =3D
buys the
> > > small replqacment lens for electric arc welding helmets it is not at =
=3D
all
> > > expensive. . . . So if as someone else posted regarding lens being to=
=3D
o dark=3D2C
> > > try (at your own risk) a lighter shade after educating yourself about=
=3D
the
> > > protection levels and risk."
> > >
> > > David -
> > > You post a lot of good information=3D2C and then now and then you com=
e =3D
up with
> > > something strange out of left field. There is NO reason to EVER use
> > > arc-welding glass to look into kilns. It is way too dark to get any s=
=3D
ense
> > > of what is really happening. Gas-welding glasses do exactly what they=
=3D
are
> > > intended to do - they protect your eyes from the UV and IR light prod=
=3D
uced by
> > > the very bright blue-white central cone of the gas welding or cutting=
=3D
flame.
> > > That is all you need to protect your eyes from the light-waves emanat=
=3D
ing
> > > from the kiln spy-hole. At any welding-supply shop you can get plasti=
=3D
c
> > > safety glasses that are the same #5 shade as gas welding goggles=3D2C=
a=3D
nd they
> > > are less expensive and less cumbersome than the goggles and very easy=
=3D
to
> > > use. There is no reason at all to use a darker filter. Again=3D2C a #=
10
> > > arc-welding lens is complete overkill and counterproductive for this
> > > application.
> > >
> > > DO NOT use the light-rose or light-purple dydimium glasses made for
> > > glassblowers. They block yellow flare that is a primary concern for
> > > glassblowers=3D2C but are not effective against infrared or ultra vio=
le=3D
t light.
> > > The #5 gas welding lens protects against all three.
> > >
> > > This was all clarified in a recent thread. Did you miss that discussi=
=3D
on?
> > > - Vince
> > >
> > > Vince Pitelka
> > > Appalachian Center for Craft
> > > Tennessee Tech University
> > > vpitelka@dtccom.net
> > > http://iweb.tntech.edu/wpitelka/
> > >
> > >
> > >
> > >
> > >
> > >
> >
> =3D
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