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viewing cones at high temperature

updated fri 14 may 99

 

John Baymore on wed 12 may 99

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Go to the hardware store and get the glass plate used in an arc welder's
helmet. At first glance...... it'll look black and opaque. It'll cost you
about 5 bucks. Find an incadescent light bulb in the store and look at the
filament. Neat, huh?

Hold this up between your eyes and the spyhole. Not only will you see the
cones better.....you'll protect your eyes a bit. Watch your hand that is
holding the tinted glass ......hot =3Cg=3E.

Best,

..............john

John Baymore
River Bend Pottery
22 Riverbend Way
Wilton, NH 03086 USA

603-654-2752
JBaymore=40compuserve.com
John.Batmore=40GSD-CO.COM (new second address........website coming)

Vince Pitelka on thu 13 may 99

>Go to the hardware store and get the glass plate used in an arc welder's
>helmet. At first glance...... it'll look black and opaque. It'll cost you
>about 5 bucks. Find an incadescent light bulb in the store and look at the
>filament. Neat, huh?

Sorry, but the glass for an arc-welder's helmet is much too dark for viewing
cones. What you need is the glass on the dark side of the range used for
oxy-acetylene welders goggles. I can't remember the specific number, but
you can get the glass at any welding supply store. You can also get plastic
safety-glasses with the appropriate tint. They should seem like VERY dark
sunglasses.
Good luck -
- Vince

Vince Pitelka - vpitelka@DeKalb.net
Home 615/597-5376, work 615/597-6801, fax 615/597-6803
Appalachian Center for Crafts
Tennessee Technological University
1560 Craft Center Drive, Smithville TN 37166

David Hewitt on thu 13 may 99

I have two inspection holes on the side of my electric kiln. I usually
work with one set of cones in line with the lower inspection hole, but
in order to view the cones easily I take out both bungs. I presume that
the air current created helps to make them more visible. Certainly it
improves the siting of the cones considerably to take out the top bung
as well as the bung in line with he cones.

--
David Hewitt
David Hewitt Pottery ,
7 Fairfield Road, Caerleon, Newport,
South Wales, NP18 3DQ, UK. Tel:- +44 (0) 1633 420647
FAX:- +44 (0) 870 1617274
Own Web site http://www.dhpot.demon.co.uk
IMC Web site http://digitalfire.com/education/people/hewitt.htm