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kiln glasses question (and viewing witness cones)

updated fri 31 aug 01

 

Arnold Howard on thu 30 aug 01


Tom Yocky asked a question about firing glasses.

9 or 10 years ago, we decided to sell firing safety glasses. I
tested many types--blue, green--even a welder's hood.

Paragon sells green firing safety glasses for $14. You can also get
them from most other kiln manufacturers.

I have included, below, instructions for positioning witness cones.
This comes from one of our manuals.

With best wishes,

Arnold Howard
Paragon Industries, Inc.

How to Position Cones on the Shelf

Position the witness cones so that you can see them through a
peephole during firing. If the kiln takes longer than usual to
fire, you may wonder if something has gone wrong and the kiln is
overfiring. But by seeing the cones, you will know how the firing
is progressing.

If you follow these guidelines, you should be able to see the cones
even at cone 10:

Place the cones 8” - 12” away from a peephole. Positioning them
closer makes them difficult to see.

Have enough space around the cones to keep them from touching a
piece of ware when they bend.

Position cones so that when viewed from the peephole, they are
silhouetted by an element on the opposite kiln wall. (Keep cones at
least 2” from an element.)

The element that silhouettes the cones should be level with the
lower part of the cone. If the element is in line with the upper
part of the cone, you won’t be able to see the cone when it bends.

If you use the three cone system, always have the higher
temperature cone on the same side in every firing. Otherwise you
can lose track of which cone is which.

Wear firing safety glasses when viewing the cones through the
peephole.




--- Tom Yocky wrote:
> As I am new to the "Art" of firing, I am quickly
> realizing that I need eye wear that will not only help
> me see cones inside the kiln, but protect me from the
> unseen rays coming out of the kiln bombarding my
> eyeball as I strain to see that cones within. So,
> What do you people recommend I get for electric firing
> up to cone 6. I can get a pair of these glasses
> easily form e-bay.
> ---paste from ebay---
> Crews Blackjack Welding Glasses**5.0 tint**
> 5.0 tint
> Lightweight polycarbonate lens
> Metal alloy temples with non-slip head-grips
> Meets or exceeds ANSI Z87.1 Standards
> Provides 99.9% UV protection
>
> But will these work well for me? I'm sure they will
> protect my eyes but will they also help me to see the
> cones?
> Thanks
> Tom in Klamath Falls Oregon
>


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Charles Moore on thu 30 aug 01


Claypeople,

Listen to Arnold Howard (below). I had some glasses that were supposed to
enable me to see while protecting my eyes. Arnold set me straight. I
bought the glasses he recommended. They work much better. Now I can see
the light.

Thanks, Arnold.

Charles Moore

PS: I have no affiliation with Paragon.
----- Original Message -----
From: "Arnold Howard"
To:
Sent: Thursday, August 30, 2001 8:41 AM
Subject: Re: kiln glasses question (and viewing witness cones)


> Tom Yocky asked a question about firing glasses.
>
> 9 or 10 years ago, we decided to sell firing safety glasses. I
> tested many types--blue, green--even a welder's hood.
>
> Paragon sells green firing safety glasses for $14. You can also get
> them from most other kiln manufacturers.
>
> I have included, below, instructions for positioning witness cones.
> This comes from one of our manuals.
>
> With best wishes,
>
> Arnold Howard
> Paragon Industries, Inc.
>
> How to Position Cones on the Shelf
>
> Position the witness cones so that you can see them through a
> peephole during firing. If the kiln takes longer than usual to
> fire, you may wonder if something has gone wrong and the kiln is
> overfiring. But by seeing the cones, you will know how the firing
> is progressing.
>
> If you follow these guidelines, you should be able to see the cones
> even at cone 10:
>
> Place the cones 8" - 12" away from a peephole. Positioning them
> closer makes them difficult to see.
>
> Have enough space around the cones to keep them from touching a
> piece of ware when they bend.
>
> Position cones so that when viewed from the peephole, they are
> silhouetted by an element on the opposite kiln wall. (Keep cones at
> least 2" from an element.)
>
> The element that silhouettes the cones should be level with the
> lower part of the cone. If the element is in line with the upper
> part of the cone, you won't be able to see the cone when it bends.
>
> If you use the three cone system, always have the higher
> temperature cone on the same side in every firing. Otherwise you
> can lose track of which cone is which.
>
> Wear firing safety glasses when viewing the cones through the
> peephole.
>
>
>
>
> --- Tom Yocky wrote:
> > As I am new to the "Art" of firing, I am quickly
> > realizing that I need eye wear that will not only help
> > me see cones inside the kiln, but protect me from the
> > unseen rays coming out of the kiln bombarding my
> > eyeball as I strain to see that cones within. So,
> > What do you people recommend I get for electric firing
> > up to cone 6. I can get a pair of these glasses
> > easily form e-bay.
> > ---paste from ebay---
> > Crews Blackjack Welding Glasses**5.0 tint**
> > 5.0 tint
> > Lightweight polycarbonate lens
> > Metal alloy temples with non-slip head-grips
> > Meets or exceeds ANSI Z87.1 Standards
> > Provides 99.9% UV protection
> >
> > But will these work well for me? I'm sure they will
> > protect my eyes but will they also help me to see the
> > cones?
> > Thanks
> > Tom in Klamath Falls Oregon
> >
>
>
> __________________________________________________
> Do You Yahoo!?
> Get email alerts & NEW webcam video instant messaging with Yahoo!
Messenger
> http://im.yahoo.com
>
>
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