gina mars on thu 11 aug 11
Thanks all for your kiln goggle information. Here's what happened
after all your emails. I ended up going on ebay an ordering welding
goggles that I thought were the right ones I needed to view my cones
in a cone 10 firing and also a raku firing. The goggles I purchased were =
=3D
the wrong
ones. I was supposed to get welding number 3 or 5's. The ones I picked =3D
were=3D20
for arc and the description I found on most goggles was hard to =3D
understand.
The poor person who has to deal with me now for a refund lives in Guam.
Poor soul, but he did have free shipping. After careful research I was =3D
told=3D20
that didymium glasses are NOT what I should be using and the correct
welding goggles have been hard to locate through the typical companies=3D20=
=3D
like Northern Tools. I'm not sure what to do next.
On another note, I think that i got some eye burn from raku firing, is =3D
that=3D20
possible? They are itching as heck.
Gina Mars
www.marspottery.net
Carl Cravens on fri 12 aug 11
Amazon has maybe fifty different pair... basic welding glasses are common a=
nd should be easy to find (though not at your local home improvement store)=
. You don't have to get "goggles" or anything particularly fancy... many o=
f them look like sunglasses or shaded safety glasses.
It's surprising, with as much welding equipment Northern Tool carries, that=
they have 15 welding masks (in designer colors!) and not a single pair of =
welding glasses or goggles. (Technically, you could by a #3 replacement gl=
ass for a welding mask and just hold that in front of the peep hole when yo=
u look.)
This is the pair I own...
http://www.amazon.com/gp/product/B002A5J4IM
--
Carl D Cravens (raven@phoenyx.net)
And old UNIX programmers never die, they just lose their grep.
Pottery by John on fri 12 aug 11
Hi Gina,
Try McMaster-Carr:
http://www.mcmaster.com/#welding-goggles/=3Ddl4kvv
With Style A you can have that John Lennon look ;-)
John Lowes
Sandy Springs, Georgia
http://wynhillpottery.weebly.com/
David Hendley on sat 13 aug 11
Gina, gosh-darn-it, the Internet is not the best place to buy everything
after all.
Just go down to a welding supply store and buy some "cutting goggles
for an oxy-acetylene torch". Every town of 10,000 people has one.
The salesman will probably be young and handsome and will give
you exactly what you need and you will be supporting your local
business.
After all day firing my wood kiln, the main problem I have with
my eyes is that they are extremely dry. I suspect that is what
happened to you. Try some "liquid tears" eye drops, and don't
be firing again until you get your goggles.
David Hendley
david@farmpots.com
http://www.farmpots.com
http://www.thewahooligans.com
----- Original Message -----
From: "gina mars"
To:
Sent: Thursday, August 11, 2011 7:41 PM
Subject: Glasses for kiln viewing
Thanks all for your kiln goggle information. Here's what happened
after all your emails. I ended up going on ebay an ordering welding
goggles that I thought were the right ones I needed to view my cones
in a cone 10 firing and also a raku firing. The goggles I purchased were th=
e
wrong
ones. I was supposed to get welding number 3 or 5's. The ones I picked were
for arc and the description I found on most goggles was hard to understand.
The poor person who has to deal with me now for a refund lives in Guam.
Poor soul, but he did have free shipping. After careful research I was told
that didymium glasses are NOT what I should be using and the correct
welding goggles have been hard to locate through the typical companies
like Northern Tools. I'm not sure what to do next.
On another note, I think that i got some eye burn from raku firing, is tha=
t
possible? They are itching as heck.
Gina Mars
www.marspottery.net
David Woof on sun 14 aug 11
Oh dear...Gina=3D2C Welders helmet! Schmelmit! yA gets what ya pays for. =
=3D20
I didn't read all of the good advice the good folks posted for you but I'm =
=3D
sure=3D20
hot glass workers glasses were mentioned.
=3DA0
They set the standard for Arts eye protection=3D3B keeping up with latest p=
ro=3D
tective technologies=3D20
regarding the UV spectrum of harmful radiation etc etc....=3D20
Who said otherwise? I seriously wish to know! It sounds seriously importan=
=3D
t to know. =3D20
Who was your source?
Cutting goggles and # 4 or 5 shaded lens are not designed to protect you fr=
=3D
om the entire=3D20
spectrum of intense UV and other harmful radiation produced in a high firin=
=3D
g kiln.
Get the right equipment=3D2C protect what you consider precious.
Regarding eye burns: Eye burns really hurt=3D2C can be absolute agony X ago=
ny=3D
=3D2C welders radiation burns=3D20
feel like the eyes have sand under the lids. =3D20
I have used grated raw potato poultice plastered on eye lid to relieve and =
=3D
facilitate healing.=3D20
(Not Offered as Medical Advice=3D3B just mentioned as old welders lore that=
h=3D
as worked for some)
Your eyes may be dry from the heat and irritated from smoke and possibly bo=
=3D
ron fumes as=3D20
well as other fun chemistry. Stay up wind and wear eye protection.
Best regards=3D2C Best wishes for your eyes=3D2C
David Woof.....Clarkdale=3D2C Arizona....
And what is the point of asking for advice and then acting diametrically co=
=3D
ntrary to the=3D20
well considered=3D2C and time spent advice given??? More and more I just s=
ha=3D
ke my head=3D2C=3D20
scratch myself somewhere=3D2C whether I itch or not=3D2C and go on about my=
own=3D
Biz!!!
___________________________________________________________________________=
=3D
______________________
=3D20
----- Original Message -----
From: "gina mars"
To:
Sent: Thursday=3D2C August 11=3D2C 2011 7:41 PM
Subject: Glasses for kiln viewing
=3D20
=3D20
Thanks all for your kiln goggle information. Here's what happened
after all your emails. I ended up going on ebay an ordering welding
goggles that I thought were the right ones I needed to view my cones
in a cone 10 firing and also a raku firing. The goggles I purchased were th=
=3D
e
wrong
ones. I was supposed to get welding number 3 or 5's. The ones I picked were
for arc and the description I found on most goggles was hard to understand.
The poor person who has to deal with me now for a refund lives in Guam.
Poor soul=3D2C but he did have free shipping. After careful research I was =
to=3D
ld
that didymium glasses are NOT what I should be using and the correct
welding goggles have been hard to locate through the typical companies
like Northern Tools. I'm not sure what to do next.
On another note=3D2C I think that i got some eye burn from raku firing=3D2=
C is=3D
that
possible? They are itching as heck.
Gina Mars
www.marspottery.net
=3D
David Woof on mon 15 aug 11
Answer to one of the off list messages I received: Paul...So'n'So asks: <"D=
=3D
oes the self darkening welder's hood work? Have one already but have never =
=3D
tried it">
Hi P.....=3D2C=3DA0 I too have self darkening helmets for welding. I don't =
use=3D
=3D20
them to peer into kilns. You won't find out anything meaningful by trying i=
=3D
t as the
damage to the eyes is cumulative over time.=3DA0 Best to research the=3D20
spectrum of radiation exposure it protects you from. Welding arcs and=3D20
high firing kilns are not the same animal.=3D20
Sometimes it reminds me of the S.AM tribe who in desperation wrapped=3D20
plastic wrap around serious wounds because they had observed "white man's
Medicines(antibiotics) were strong"=3DA0 Lack of accurate information make=
s =3D
for disaster. Now "white man" is going to the jungle to find the tribal cur=
=3D
es!!! Go figure that one!!!
Best regards=3D2C misneach=3D2C
David Woof
----------------------------------------
> From: P........e@att.net
> To: woofpots@HOTMAIL.COM
> Subject: RE: Glasses for kiln viewing
> Date: Sun=3D2C 14 Aug 2011 21:33:47 -0400
>
> Does the self darkening welder's hood work? Have one already but have nev=
=3D
er
> tried it...
>
> -----Original Message-----
> From: Clayart [mailto:Clayart@LSV.CERAMICS.ORG] On Behalf Of David Woof
> Sent: Sunday=3D2C August 14=3D2C 2011 3:19 PM
> To: Clayart@LSV.CERAMICS.ORG
> Subject: Re: Glasses for kiln viewing
>
> Oh dear...Gina=3D2C Welders helmet! Schmelmit! yA gets what ya pays for.
> I didn't read all of the good advice the good folks posted for you but I'=
=3D
m
> sure
> hot glass workers glasses were mentioned.
>
> They set the standard for Arts eye protection=3D3B keeping up with latest
> protective technologies
> regarding the UV spectrum of harmful radiation etc etc....
> Who said otherwise? I seriously wish to know! It sounds seriously importa=
=3D
nt
> to know.
> Who was your source?
>
> Cutting goggles and # 4 or 5 shaded lens are not designed to protect you
> from the entire
> spectrum of intense UV and other harmful radiation produced in a high fir=
=3D
ing
> kiln.
>
> Get the right equipment=3D2C protect what you consider precious.
>
> Regarding eye burns: Eye burns really hurt=3D2C can be absolute agony X a=
go=3D
ny=3D2C
> welders radiation burns
> feel like the eyes have sand under the lids.
> I have used grated raw potato poultice plastered on eye lid to relieve an=
=3D
d
> facilitate healing.
> (Not Offered as Medical Advice=3D3B just mentioned as old welders lore th=
at=3D
has
> worked for some)
>
> Your eyes may be dry from the heat and irritated from smoke and possibly
> boron fumes as
> well as other fun chemistry. Stay up wind and wear eye protection.
>
> Best regards=3D2C Best wishes for your eyes=3D2C
>
> David Woof.....Clarkdale=3D2C Arizona....
>
> And what is the point of asking for advice and then acting diametrically
> contrary to the
> well considered=3D2C and time spent advice given??? More and more I just =
sh=3D
ake
> my head=3D2C
> scratch myself somewhere=3D2C whether I itch or not=3D2C and go on about =
my o=3D
wn
> Biz!!!
> _________________________________________________________________________=
=3D
___
> _____________________
>
> ----- Original Message -----
> From: "gina mars"
> To:
> Sent: Thursday=3D2C August 11=3D2C 2011 7:41 PM
> Subject: Glasses for kiln viewing
>
>
> Thanks all for your kiln goggle information. Here's what happened
> after all your emails. I ended up going on ebay an ordering welding
> goggles that I thought were the right ones I needed to view my cones
> in a cone 10 firing and also a raku firing. The goggles I purchased were =
=3D
the
> wrong
> ones. I was supposed to get welding number 3 or 5's. The ones I picked we=
=3D
re
> for arc and the description I found on most goggles was hard to understan=
=3D
d.
> The poor person who has to deal with me now for a refund lives in Guam.
> Poor soul=3D2C but he did have free shipping. After careful research I wa=
s =3D
told
> that didymium glasses are NOT what I should be using and the correct
> welding goggles have been hard to locate through the typical companies
> like Northern Tools. I'm not sure what to do next.
> On another note=3D2C I think that i got some eye burn from raku firing=3D=
2C i=3D
s that
> possible? They are itching as heck.
> Gina Mars
> www.marspottery.net
>
=3D
Edouard Bastarache on mon 15 aug 11
In ceramics you dont have to protect your eyes against UVs,
electric arcs produce UVs; but against infra-reds (IR) if they are
powerful enough. IRs decrease according to the following formula :
1/d2, so the farther you are from the peep hole, the less energy
is received by your eye lenses.
See the following :
http://ceramic-materials.com/education/152.html
Gis,
Edouard Bastarache
Spertesperantisto
Sorel-Tracy
Quebec
http://www.flickr.com/photos/30058682@N00/
http://edouardbastarache.blogspot.com/
http://edouardbastaracheblogs2.blogspot.com/
http://www.facebook.com/edouard.bastarache
----- Original Message -----
From: "David Woof"
To:
Sent: Monday, August 15, 2011 3:21 AM
Subject: Re: Glasses for kiln viewing
Answer to one of the off list messages I received: Paul...So'n'So asks:
<"Does the self darkening welder's hood work? Have one already but have
never tried it">
Hi P....., I too have self darkening helmets for welding. I don't use
them to peer into kilns. You won't find out anything meaningful by trying i=
t
as the
damage to the eyes is cumulative over time. Best to research the
spectrum of radiation exposure it protects you from. Welding arcs and
high firing kilns are not the same animal.
Sometimes it reminds me of the S.AM tribe who in desperation wrapped
plastic wrap around serious wounds because they had observed "white man's
Medicines(antibiotics) were strong" Lack of accurate information makes for
disaster. Now "white man" is going to the jungle to find the tribal cures!!=
!
Go figure that one!!!
Best regards, misneach,
David Woof
----------------------------------------
> From: P........e@att.net
> To: woofpots@HOTMAIL.COM
> Subject: RE: Glasses for kiln viewing
> Date: Sun, 14 Aug 2011 21:33:47 -0400
>
> Does the self darkening welder's hood work? Have one already but have
> never
> tried it...
>
> -----Original Message-----
> From: Clayart [mailto:Clayart@LSV.CERAMICS.ORG] On Behalf Of David Woof
> Sent: Sunday, August 14, 2011 3:19 PM
> To: Clayart@LSV.CERAMICS.ORG
> Subject: Re: Glasses for kiln viewing
>
> Oh dear...Gina, Welders helmet! Schmelmit! yA gets what ya pays for.
> I didn't read all of the good advice the good folks posted for you but I'=
m
> sure
> hot glass workers glasses were mentioned.
>
> They set the standard for Arts eye protection; keeping up with latest
> protective technologies
> regarding the UV spectrum of harmful radiation etc etc....
> Who said otherwise? I seriously wish to know! It sounds seriously
> important
> to know.
> Who was your source?
>
> Cutting goggles and # 4 or 5 shaded lens are not designed to protect you
> from the entire
> spectrum of intense UV and other harmful radiation produced in a high
> firing
> kiln.
>
> Get the right equipment, protect what you consider precious.
>
> Regarding eye burns: Eye burns really hurt, can be absolute agony X agony=
,
> welders radiation burns
> feel like the eyes have sand under the lids.
> I have used grated raw potato poultice plastered on eye lid to relieve an=
d
> facilitate healing.
> (Not Offered as Medical Advice; just mentioned as old welders lore that
> has
> worked for some)
>
> Your eyes may be dry from the heat and irritated from smoke and possibly
> boron fumes as
> well as other fun chemistry. Stay up wind and wear eye protection.
>
> Best regards, Best wishes for your eyes,
>
> David Woof.....Clarkdale, Arizona....
>
> And what is the point of asking for advice and then acting diametrically
> contrary to the
> well considered, and time spent advice given??? More and more I just shak=
e
> my head,
> scratch myself somewhere, whether I itch or not, and go on about my own
> Biz!!!
> _________________________________________________________________________=
___
> _____________________
>
> ----- Original Message -----
> From: "gina mars"
> To:
> Sent: Thursday, August 11, 2011 7:41 PM
> Subject: Glasses for kiln viewing
>
>
> Thanks all for your kiln goggle information. Here's what happened
> after all your emails. I ended up going on ebay an ordering welding
> goggles that I thought were the right ones I needed to view my cones
> in a cone 10 firing and also a raku firing. The goggles I purchased were
> the
> wrong
> ones. I was supposed to get welding number 3 or 5's. The ones I picked
> were
> for arc and the description I found on most goggles was hard to
> understand.
> The poor person who has to deal with me now for a refund lives in Guam.
> Poor soul, but he did have free shipping. After careful research I was
> told
> that didymium glasses are NOT what I should be using and the correct
> welding goggles have been hard to locate through the typical companies
> like Northern Tools. I'm not sure what to do next.
> On another note, I think that i got some eye burn from raku firing, is
> that
> possible? They are itching as heck.
> Gina Mars
> www.marspottery.net
>
David Woof on tue 16 aug 11
Hi Ed=3D2C=3D20
You have contributed much over these past years so I respectfully ask=3D3B =
ho=3D
w do you respond to the perponderance of science that runs contrary to your=
=3D
statements here and from the linked site authored by you?=3DA0 One has but=
t=3D
o Google and the assertions that Ceramic kilns do generate UV radiation are=
=3D
abundant.
On a related note:
Richard Bresnahan=3D2C St John's University=3D2C wrote papers back in the 1=
990'=3D
s regarding phenonomon he witnessed while firing the Johanna kiln that arou=
=3D
sed the attention of astrophysics researchers who were following his papers=
=3D
and approched him for permission to bring their spectroscopic equipment to=
=3D
his next firing to confirm their suspicisions that in a large high fire ki=
=3D
ln the same conditions are created and exist on a micro level as the condit=
=3D
ions in stellar space when a star is born. (Pass the UV IR and Gamma rays p=
=3D
lease?) I have not again looked up the articles so can not give you citatio=
=3D
ns but in discussions with Richard I also heard it from his own lips.
I had been telling my students and apprentices at the time that we were wor=
=3D
king at a sub-atomic level in my kiln=3D2C and it made my hair stand up to =
he=3D
ar what Richard was thinking and experiencing.
Also=3D2C and again I have no time to devote to citations so am working fro=
m =3D
memory=3D2C that at high temperatures=3D2C ceramic objects in close proximi=
ty b=3D
egin to fire each other due to an electrical exchange of energy.=3D20
I apologize for not providing documentation.(my time constraints) However t=
=3D
he information is out there for those interested. Perhaps someone on the li=
=3D
st will fill in more information for us.=3D20
We are playing with something much bigger than throwing sticks=3D2C or tuni=
ng=3D
some current state of the art gas burners.
I think enough has been said about welders goggles and lens to induce a thi=
=3D
nking person to purchase the best and proper eye protection.=3D20
Priorities!!!Give up beer and soda for a week and buy something good for yo=
=3D
ur eyes.
Misneach=3D2C
David Woof......always peering a little over the edge=3D3B seeing
__________________________________________
Re: Glasses for kiln viewing
Posted by: "Edouard Bastarache" edouardb@COLBA.NET=3D20
Date: Mon Aug 15=3D2C 2011 9:54 am ((PDT))
=3D20
In ceramics you dont have to protect your eyes against UVs=3D2C
electric arcs produce UVs=3D3B but against infra-reds (IR) if they are
powerful enough. IRs decrease according to the following formula :
1/d2=3D2C so the farther you are from the peep hole=3D2C the less energy
is received by your eye lenses.
See the following :
=3D20
http://ceramic-materials.com/education/152.html
=3D20
=3D20
Gis=3D2C
=3D20
Edouard Bastarache
Spertesperantisto
=3D20
Sorel-Tracy
Quebec
=3D20
http://www.flickr.com/photos/30058682@N00/
http://edouardbastarache.blogspot.com/
http://edouardbastaracheblogs2.blogspot.com/
http://www.facebook.com/edouard.bastarache
=3D20
----- Original Message -----
From: "David Woof"
To:
Sent: Monday=3D2C August 15=3D2C 2011 3:21 AM
Subject: Re: Glasses for kiln viewing
=3D20
Answer to one of the off list messages I received: Paul...So'n'So asks:
<"Does the self darkening welder's hood work? Have one already but have
never tried it">
=3D20
Hi P.....=3D2C I too have self darkening helmets for welding. I don't use
them to peer into kilns. You won't find out anything meaningful by trying i=
=3D
t
as the
damage to the eyes is cumulative over time. Best to research the
spectrum of radiation exposure it protects you from. Welding arcs and
high firing kilns are not the same animal.
=3D20
Sometimes it reminds me of the S.AM tribe who in desperation wrapped
plastic wrap around serious wounds because they had observed "white man's
Medicines(antibiotics) were strong" Lack of accurate information makes for
disaster. Now "white man" is going to the jungle to find the tribal cures!!=
=3D
!
Go figure that one!!!
=3D20
Best regards=3D2C misneach=3D2C
=3D20
=3D20
=3D20
David Wo
=3DA0=3DA0=3DA0=3D20
=3D
Mike on tue 16 aug 11
The following link provides information regarding UV, IR, and sodium
flare for glass blowers:
http://www.cdc.gov/niosh/hhe/reports/pdfs/1998-0139-2769.pdf
It indicates that UV is not present at hazardous levels. Not so with IR.
Mike
in Taku, Japan
http://karatsupots.com
http://karatsupots.blogspot.com
Workshop in Taku 2012: The Simple Teabowl, May 12 - 18
http://karatsupots.com/workshop2012/2012home.html
http://workshopintaku2012.blogspot.com/
(2011/08/16 15:02), David Woof wrote:
> Hi Ed,
>
> You have contributed much over these past years so I respectfully ask; ho=
w do you respond to the perponderance of science that runs contrary to your=
statements here and from the linked site authored by you? One has but to =
Google and the assertions that Ceramic kilns do generate UV radiation are a=
bundant.
>
> On a related note:
>
> Richard Bresnahan, St John's University, wrote papers back in the 1990's =
regarding phenonomon he witnessed while firing the Johanna kiln that arouse=
d the attention of astrophysics researchers who were following his papers a=
nd approched him for permission to bring their spectroscopic equipment to h=
is next firing to confirm their suspicisions that in a large high fire kiln=
the same conditions are created and exist on a micro level as the conditio=
ns in stellar space when a star is born. (Pass the UV IR and Gamma rays ple=
ase?) I have not again looked up the articles so can not give you citations=
but in discussions with Richard I also heard it from his own lips.
>
> I had been telling my students and apprentices at the time that we were w=
orking at a sub-atomic level in my kiln, and it made my hair stand up to he=
ar what Richard was thinking and experiencing.
>
> Also, and again I have no time to devote to citations so am working from =
memory, that at high temperatures, ceramic objects in close proximity begin=
to fire each other due to an electrical exchange of energy.
>
> I apologize for not providing documentation.(my time constraints) However=
the information is out there for those interested. Perhaps someone on the =
list will fill in more information for us.
>
> We are playing with something much bigger than throwing sticks, or tuning=
some current state of the art gas burners.
>
> I think enough has been said about welders goggles and lens to induce a t=
hinking person to purchase the best and proper eye protection.
>
> Priorities!!!Give up beer and soda for a week and buy something good for =
your eyes.
>
> Misneach,
>
> David Woof......always peering a little over the edge; seeing
> __________________________________________
>
>
> Re: Glasses for kiln viewing
> Posted by: "Edouard Bastarache" edouardb@COLBA.NET
> Date: Mon Aug 15, 2011 9:54 am ((PDT))
>
> In ceramics you dont have to protect your eyes against UVs,
> electric arcs produce UVs; but against infra-reds (IR) if they are
> powerful enough. IRs decrease according to the following formula :
> 1/d2, so the farther you are from the peep hole, the less energy
> is received by your eye lenses.
> See the following :
>
> http://ceramic-materials.com/education/152.html
>
>
> Gis,
>
> Edouard Bastarache
> Spertesperantisto
>
> Sorel-Tracy
> Quebec
>
> http://www.flickr.com/photos/30058682@N00/
> http://edouardbastarache.blogspot.com/
> http://edouardbastaracheblogs2.blogspot.com/
> http://www.facebook.com/edouard.bastarache
>
> ----- Original Message -----
> From: "David Woof"
> To:
> Sent: Monday, August 15, 2011 3:21 AM
> Subject: Re: Glasses for kiln viewing
>
> Answer to one of the off list messages I received: Paul...So'n'So asks:
> <"Does the self darkening welder's hood work? Have one already but have
> never tried it">
>
> Hi P....., I too have self darkening helmets for welding. I don't use
> them to peer into kilns. You won't find out anything meaningful by trying=
it
> as the
> damage to the eyes is cumulative over time. Best to research the
> spectrum of radiation exposure it protects you from. Welding arcs and
> high firing kilns are not the same animal.
>
> Sometimes it reminds me of the S.AM tribe who in desperation wrapped
> plastic wrap around serious wounds because they had observed "white man's
> Medicines(antibiotics) were strong" Lack of accurate information makes =
for
> disaster. Now "white man" is going to the jungle to find the tribal cures=
!!!
> Go figure that one!!!
>
> Best regards, misneach,
>
>
>
> David Wo
>
>
>
Edouard Bastarache on tue 16 aug 11
My docuemntary souces dated to the beginning of the 2000s written by
specialists in the field of Occupational Health and Safety,,,
You need electric arcs to produce UVs in the industry such as in welding an=
d
steel melting, inwhich process 1-yard thick electrodes are used
They usually use 3per kiln and the melting material does not produce UVs, I
worked decades for a large steelmaking industry and they were rich enough t=
o
measure by Occupational Hygienists, an independant private firm, the
exposure of our workers to these rays, UVs and IRs, at different work
stations, steelmelting, hot rolling etc.
This study was conducted to improve the protection of our workers.
The conclusion was only the processes involving electric arcs were producin=
g
UVs,
such as in welding, and the UVs produced by the 1- yard thick electrodes di=
d
not reach the eyes of workers because of their location on top very large
150-tons capacity furnaces.
In our region mild steel is produced at 2,800 F and stainless at more or
less 3,000 F.
In pottery we fire lower than 2,800F.
Gis,
Edouard Bastarache
Spertesperantisto
Sorel-Tracy
Quebec
http://www.flickr.com/photos/30058682@N00/
http://edouardbastarache.blogspot.com/
http://edouardbastaracheblogs2.blogspot.com/
http://www.facebook.com/edouard.bastarache
age -----
From: "David Woof"
To:
Sent: Tuesday, August 16, 2011 2:02 AM
Subject: Re: Glasses for kiln viewing
Hi Ed,
You have contributed much over these past years so I respectfully ask; how
do you respond to the perponderance of science that runs contrary to your
statements here and from the linked site authored by you? One has but to
Google and the assertions that Ceramic kilns do generate UV radiation are
abundant.
On a related note:
Richard Bresnahan, St John's University, wrote papers back in the 1990's
regarding phenonomon he witnessed while firing the Johanna kiln that arouse=
d
the attention of astrophysics researchers who were following his papers and
approched him for permission to bring their spectroscopic equipment to his
next firing to confirm their suspicisions that in a large high fire kiln th=
e
same conditions are created and exist on a micro level as the conditions in
stellar space when a star is born. (Pass the UV IR and Gamma rays please?) =
I
have not again looked up the articles so can not give you citations but in
discussions with Richard I also heard it from his own lips.
I had been telling my students and apprentices at the time that we were
working at a sub-atomic level in my kiln, and it made my hair stand up to
hear what Richard was thinking and experiencing.
Also, and again I have no time to devote to citations so am working from
memory, that at high temperatures, ceramic objects in close proximity begin
to fire each other due to an electrical exchange of energy.
I apologize for not providing documentation.(my time constraints) However
the information is out there for those interested. Perhaps someone on the
list will fill in more information for us.
We are playing with something much bigger than throwing sticks, or tuning
some current state of the art gas burners.
I think enough has been said about welders goggles and lens to induce a
thinking person to purchase the best and proper eye protection.
Priorities!!!Give up beer and soda for a week and buy something good for
your eyes.
Misneach,
David Woof......always peering a little over the edge; seeing
__________________________________________
Re: Glasses for kiln viewing
Posted by: "Edouard Bastarache" edouardb@COLBA.NET
Date: Mon Aug 15, 2011 9:54 am ((PDT))
In ceramics you dont have to protect your eyes against UVs,
electric arcs produce UVs; but against infra-reds (IR) if they are
powerful enough. IRs decrease according to the following formula :
1/d2, so the farther you are from the peep hole, the less energy
is received by your eye lenses.
See the following :
http://ceramic-materials.com/education/152.html
Gis,
Edouard Bastarache
Spertesperantisto
Sorel-Tracy
Quebec
http://www.flickr.com/photos/30058682@N00/
http://edouardbastarache.blogspot.com/
http://edouardbastaracheblogs2.blogspot.com/
http://www.facebook.com/edouard.bastarache
----- Original Message -----
From: "David Woof"
To:
Sent: Monday, August 15, 2011 3:21 AM
Subject: Re: Glasses for kiln viewing
Answer to one of the off list messages I received: Paul...So'n'So asks:
<"Does the self darkening welder's hood work? Have one already but have
never tried it">
Hi P....., I too have self darkening helmets for welding. I don't use
them to peer into kilns. You won't find out anything meaningful by trying i=
t
as the
damage to the eyes is cumulative over time. Best to research the
spectrum of radiation exposure it protects you from. Welding arcs and
high firing kilns are not the same animal.
Sometimes it reminds me of the S.AM tribe who in desperation wrapped
plastic wrap around serious wounds because they had observed "white man's
Medicines(antibiotics) were strong" Lack of accurate information makes for
disaster. Now "white man" is going to the jungle to find the tribal cures!!=
!
Go figure that one!!!
Best regards, misneach,
David Wo
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