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Serving 3-D & clay artists in the Pacific Northwest and beyond since 1965
  
Prices are subject to change without notice. Current prices at our stores override all previously published prices.
Shipping charges shown in our shopping cart are only estimates. Actual shipping charges may vary when we ship your order.
 

Orton Pyrometric Cones

Click here for:
Kiln-Sitter Bars • SRB Junior Cones • LRB Large Cones
SSB Witness Cones • SSB Witness Cone Sample Sets

 

*** Orton Cones are sporadically in and out of stock ***
We will contact you when they come in,
but be prepared for extended lead times.

 

Orton makes cones from cone 022 up to cone 42. During firing, cones soften and melt as they are heated, and gravity causes them to bend. This bending indicates that the cone and the ware on that shelf have received a specific amount of heat, matching the formulated melting point of the materials in the cone. It usually takes 15 to 22 minutes for cones to bend fully once they begin melting.

Cone numbers originally started at 1 and went to 20. Each higher cone number requires more heat (a higher temperature) to bend. As demand for cones grew, both lower and higher cones were developed. A zero was added in front of the number for cones maturing at lower temperatures, below the original cone 1. Thus cone 01 needs less heat than cone 1, and cone 020 needs less than cone 019. It is important not to mix up the lower maturing cones, whose numbers begin with zero, with the higher maturing cones.

Cone 6 and cone 06 are NOT the same thing!

When using cones in the Dawson Kiln-Sitter to control your kiln, place the cone for your desired target temperature between the claws of the cone holder inside your kiln. When the cone melts, the sensing rod will trip the plunger to shut off the kiln's power.

When using witness cones in your kiln, place cones on each shelf. It's common and recommended to use 3 cones on each shelf: one cone is the actual target temperature, one cone is one increment higher, and one lower. For a cone 04 firing, the trio of cones would be one each of 03-04-05. This combination will indicate how accurately your kiln reached the target temperature on each shelf of your kiln. Regularly using witness cones gives you the true measure of how accurately your kiln fires to the desired temperature. Leadfree glazes require consistent firings to the proper temperature to achieve proper clay/glaze fit and to meet food safety standards. Witness cones are a must for porcelain doll firings, too. Porcelain is unforgiving, and there is no margin for error.

Orton LRB and SRB cones look different now!
The machine that Orton used to separate the cones was extremely old and finally broke down, so Orton has decided not to replace the machine. You will find the cones attached together and they will need to be split apart. Use a butter knife, screw driver, or anything with a flat tip as a wedge between the two cones and tap it with something like a heavy spoon. The two should break apart easily. A cone breaker is also effective, as shown below.

K911 • $2.50
SRB Cone Breaker
Place cone pair with numbers facing up inside, place on flat surface, press the open end to seperate the cones! The ones we sell will be white (not black as shown).
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Orton Cone Template

K600F • $1.99
Cone Template
Pocket Size Measuring Template for Orton Large and Self-Supporting Cones. You'll find Temperature equivalents on the back to measure in °Fahrenheit. Great for measuring the bending angle of a fired cone!
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For more information about Orton cones, please visitwww.ortonceramic.com.

Orton offers testing services!
Click on the links below for more information:

Available Tests - and - Price for Services as PDF

 

Junior Cones

Small "Junior" Cones are commonly used in the Dawson Kiln-Sitter. The tapered shape allows some flexibility in adjusting the shutoff point by placing the thinner or thicker portion of the cone under the sensing rod. Junior Cones can also be used on the kiln shelf as mini witness cones when space is limited.

Junior Cones deform at slightly higher temperatures than Self-Supporting or Large cones rated for the same temperature.50 cones per box.
Shipped as pairs in the box. Use the cone breaker above to split these cones easily.

022

SRB022 • 1094°F • $17.20
SRB022 Orton pyrometric junior cones for cone 022 Orton 1094° Fahrenheit Orton pyrometric junior cones for cone 022 firing
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021

SRB021 • 1143°F • $17.20
SRB021 Orton pyrometric junior cones for cone 021 Orton 1143° Fahrenheit Orton pyrometric junior cones for cone 021 firing
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020

SRB020 • 1180°F • $17.20
SRB020 Orton pyrometric Junior Cones for cone 020 Orton 1180° Fahrenheit Orton pyrometric Junior Cones for cone 020 firing
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019

SRB019 • 1265°F • $17.20
SRB019 Orton pyrometric Junior Cones for cone 019 Orton 1265° Fahrenheit Orton pyrometric Junior Cones for cone 019 firing
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018

SRB018 • 1337°F • $17.20
SRB018 Orton pyrometric Junior Cones for cone 018 Orton 1337° Fahrenheit Orton pyrometric Junior Cones for cone 018 firing
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017

SRB017 • 1386°F • $17.20
SRB017 Orton pyrometric Junior Cones for cone 017 Orton 1386° Fahrenheit Orton pyrometric Junior Cones for cone 017 firing
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016

SRB016 • 1443°F • $17.20
SRB016 Orton pyrometric Junior Cones for cone 016 Orton 1443° Fahrenheit Orton pyrometric Junior Cones for cone 016 firing
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015

SRB015 • 1485°F • $17.20
SRB015 Orton pyrometric Junior Cones for cone 015 Orton 1485° Fahrenheit Orton pyrometric Junior Cones for cone 015 firing
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014

SRB014 • 1528°F • $17.20
SRB014 Orton pyrometric Junior Cones for cone 014 Orton 1528° Fahrenheit Orton pyrometric Junior Cones for cone 014 firing
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013

SRB013 • 1566°F • $17.20
SRB013 Orton pyrometric Junior Cones for cone 013 Orton 1566° Fahrenheit Orton pyrometric Junior Cones for cone 013 firing
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012

SRB012 • 1587°F • $17.20
SRB012 Orton pyrometric Junior Cones for cone 012 Orton 1587° Fahrenheit Orton pyrometric Junior Cones for cone 012 firing
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014

SRB011 • 1623°F • $17.20
SRB011 Orton pyrometric Junior Cones for cone 011 Orton 1623° Fahrenheit Orton pyrometric Junior Cones for cone 011 firing
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010

SRB010 • 1641°F • $17.20
SRB010 Orton pyrometric Junior Cars for cone 010 Orton 1641° Fahrenheit Orton pyrometric Junior Cones for cone 010 firing
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09

SRB09 • 1693°F • $17.20
SRB09 Orton pyrometric Junior Cones for cone 09 Orton 1693° Fahrenheit Orton pyrometric Junior Cones for cone 09 firing
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08

SRB08 • 1751°F • $17.20
SRB014 Orton pyrometric Junior Cones for cone 08 Orton 1751° Fahrenheit Orton pyrometric Junior Cones for cone 08 firing
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07

SRB07 • 1803°F • $17.20
SRB07 Orton pyrometric Junior Cones for cone 07 Orton 1803° Fahrenheit Orton pyrometric Junior Cones for cone 07 firing
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06

SRB06 • 1830°F • $17.20
SRB06 Orton pyrometric Junior Cones for cone 06 Orton 1830° Fahrenheit Orton pyrometric Junior Cones for cone 06 firing
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05

SRB05 • 1915°F • $17.20
SRB05 Orton pyrometric Junior Cones for cone 05 Orton 1915° Fahrenheit Orton pyrometric Junior Cones for cone 05 firing
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04

SRB04 • 1940°F • $17.20
SRB04 Orton pyrometric Junior Cones for cone 04 Orton 1940° Fahrenheit Orton pyrometric Junior Cones for cone 04 firing
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03

SRB03 • 2014°F • $17.20
Orton pyrometric Junior Cones for cone 03 Orton 2014° Fahrenheit Orton pyrometric Junior Cones for cone 03 firing

SRB03 $10.00 Orton pyrometric Junior Cones for cone 03 firing Georgies Ceramic & Clay - Portland, OR

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02

SRB02 • 2048°F • $17.20
SRB02 Orton pyrometric Junior Cones for cone 02 Orton 2048° Fahrenheit Orton pyrometric Junior Cones for cone 02 firing

SRB02 $10.00 Orton pyrometric Junior Cones for cone 02 firing Georgies Ceramic & Clay - Portland, OR

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01

SRB01 • 2079°F • $17.20
SRB01 Orton pyrometric Junior Cones for cone 01 Orton 2079° Fahrenheit Orton pyrometric Junior Cones for cone 01 firing
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1

SRB1 • 2109°F • $17.20
SRB1 Orton pyrometric Junior Cones for cone 1 Orton 2109° Fahrenheit Orton pyrometric Junior Cones for cone 1 firing
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2

SRB2 • 2124°F • $17.20
SRB2 Orton pyrometric Junior Cones for cone 2 Orton 2124° Fahrenheit Orton pyrometric Junior Cones for cone 2 firing
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3

SRB3 • 2134°F • $17.20
SRB3 Orton pyrometric Junior Cones for cone 3 Orton 2134° Fahrenheit Orton pyrometric Junior Cones for cone 3 firing
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4

SRB4 • 2167°F • $17.20
SRB4 Orton pyrometric Junior Cones for cone 4 Orton 2167° Fahrenheit Orton pyrometric Junior Cones for cone 4 firing
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5

SRB5 • 2185°F • $17.20
SRB5 Orton pyrometric Junior Cones for cone 5 Orton 2185° Fahrenheit Orton pyrometric Junior Cones for cone 5 firing
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6

SRB6 • 2232°F • $17.20
SRB6 Orton pyrometric Junior Cones for cone 6 Orton 2232° Fahrenheit Orton pyrometric Junior Cones for cone 6 firing
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7

SRB7 • 2264°F • $17.20
SRB7 Orton pyrometric Junior Cones for cone 7 Orton 2264° Fahrenheit Orton pyrometric Junior Cones for cone 7 firing
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8

SRB8 • 2305°F • $17.20
SRB8 Orton pyrometric Junior Cones for cone 8 Orton 2305° Fahrenheit Orton pyrometric Junior Cones for cone 8 firing
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9

SRB9 • 2336°F • $17.20
B9 Orton pyrometric Junior Cones for cone 9 Orton 2336° Fahrenheit Orton pyrometric Junior Cones for cone 9 firing
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10

SRB10 • 2381°F • $17.20
SRB10 Orton pyrometric Junior Cones for cone and Orton 2381° Fahrenheit Orton pyrometric Junior Cones for cone 10 firing
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Mini Bars

Orton bars were specially designed to function in the Dawson Kiln-Sitter. They yield the same result as Junior Cones centered in the Kiln Sitter. The uniform shape makes consistent placement easy without affecting the firing. Click the down arrow for more temperature options. 50 per box.

022

BRB022 • 1094°F • $19.55
ton pyrometric mini bars for cone 022 Orton 1094° Fahrenheit Orton pyrometric bars for cone 022 firing

BRB022 $12.00 Orton pyrometric bars for cone 022 firing Georgies Ceramic & Clay - Portland, OR

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021

BRB021 • 1143°F • $19.55
BRB021 Orton pyrometric mini bars for cone 021 Orton 1143° Fahrenheit Orton pyrometric bars for cone 021 firing

BRB021 $12.00 Orton pyrometric bars for cone 021 firing Georgies Ceramic & Clay - Portland, OR

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020

BRB020 • 1180°F • $19.55
BRB020 Orton pyrometric mini bars for cone 020 Orton 1180° Fahrenheit Orton pyrometric bars for cone 020 firing

BRB020 $12.00 Orton pyrometric bars for cone 020 firing Georgies Ceramic & Clay - Portland, OR

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019

BRB019 • 1265°F • $19.55
BRB019 Orton pyrometric mini bars for cone 019 Orton 1265° Fahrenheit Orton pyrometric bars for cone 019 firing

BRB019 $12.00 Orton pyrometric bars for cone 019 firing Georgies Ceramic & Clay - Portland, OR

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018

BRB018 • 1337°F • $19.55
BRB018 Orton pyrometric mini bars for cone 018 Orton 1337° Fahrenheit Orton pyrometric bars for cone 018 firing

BRB018 $12.00 Orton pyrometric bars for cone 018 firing Georgies Ceramic & Clay - Portland, OR

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017

BRB017 • 1386°F • $19.55
17 Orton pyrometric mini bars for cone 017 Orton 1386° Fahrenheit Orton pyrometric bars for cone 017 firing

BRB017 $12.00 Orton pyrometric bars for cone 017 firing Georgies Ceramic & Clay - Portland, OR

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016

BRB016 • 1443°F • $19.55
BRB016 Orton pyrometric mini bars for cone 016 Orton 1443° Fahrenheit Orton pyrometric bars for cone 016 firing

BRB016 $12.00 Orton pyrometric bars for cone 016 firing Georgies Ceramic & Clay - Portland, OR

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015

BRB015 • 1485°F • $19.55
BRB015 Orton pyrometric mini bars for cone 015 Orton 1485° Fahrenheit Orton pyrometric bars for cone 015 firing

BRB015 $12.00 Orton pyrometric bars for cone 015 firing Georgies Ceramic & Clay - Portland, OR

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014

BRB014 • 1528°F • $19.55
BRB014 Orton pyrometric mini bars for cone 014 Orton 1528° Fahrenheit Orton pyrometric bars for cone 014 firing

BRB014 $12.00 Orton pyrometric bars for cone 014 firing Georgies Ceramic & Clay - Portland, OR

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013

BRB013 • 1566°F • $19.55
BRB013 Orton pyrometric mini bars for cone 013 Orton 1566° Fahrenheit Orton pyrometric bars for cone 013 firing

BRB013 $12.00 Orton pyrometric bars for cone 013 firing Georgies Ceramic & Clay - Portland, OR

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012

BRB012 • 1587°F • $19.55
BRB012 Orton pyrometric mini bars for cone 012 Orton 1587° Fahrenheit Orton pyrometric bars for cone 012 firing

BRB012 $12.00 Orton pyrometric bars for cone 012 firing Georgies Ceramic & Clay - Portland, OR

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014

BRB011 • 1623°F • $19.55
BRB011 Orton pyrometric mini bars for cone 011 Orton 1623° Fahrenheit Orton pyrometric bars for cone 011 firing

BRB011 $12.00 Orton pyrometric bars for cone 011 firing Georgies Ceramic & Clay - Portland, OR

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010

BRB010 • 1641°F • $19.55
BRB010 Orton pyrometric mini bars for cone 010 Orton 1641° Fahrenheit Orton pyrometric bars for cone 010 firing

BRB010 $12.00 Orton pyrometric bars for cone 010 firing Georgies Ceramic & Clay - Portland, OR

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09

BRB09 • 1693°F • $19.55
Orton pyrometric mini bars for cone 09 Orton 1693° Fahrenheit Orton pyrometric bars for cone 09 firing

BRB09 $12.00 Orton pyrometric bars for cone 09 firing Georgies Ceramic & Clay - Portland, OR

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08

BRB08 • 1751°F • $19.55
BRB014 Orton pyrometric mini bars for cone 08 Orton 1751° Fahrenheit Orton pyrometric bars for cone 08 firing

BRB08 $12.00 Orton pyrometric bars for cone 08 firing Georgies Ceramic & Clay - Portland, OR

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07

BRB07 • 1803°F • $19.55
BRB07 Orton pyrometric mini bars for cone 07 Orton 1803° Fahrenheit Orton pyrometric bars for cone 07 firing

BRB07 $12.00 Orton pyrometric bars for cone 07 firing Georgies Ceramic & Clay - Portland, OR

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06

BRB06 • 1830°F • $19.55
BRB06 Orton pyrometric mini bars for cone 06 Orton 1830° Fahrenheit Orton pyrometric bars for cone 06 firing

BRB06 $12.00 Orton pyrometric bars for cone 06 firing Georgies Ceramic & Clay - Portland, OR

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05

BRB05 • 1915°F • $19.55
BRB05 Orton pyrometric mini bars for cone 05 Orton 1915° Fahrenheit Orton pyrometric bars for cone 05 firing

BRB05 $12.00 Orton pyrometric bars for cone 05 firing Georgies Ceramic & Clay - Portland, OR

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04

BRB04 • 1940°F • $19.55
BRB04 Orton pyrometric mini bars for cone 04 Orton 1940° Fahrenheit Orton pyrometric bars for cone 04 firing

BRB04 $12.00 Orton pyrometric bars for cone 04 firing Georgies Ceramic & Clay - Portland, OR

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03

BRB03 • 2014°F • $19.55
3 Orton pyrometric mini bars for cone 03 Orton 2014° Fahrenheit Orton pyrometric bars for cone 03 firing

BRB03 $12.00 Orton pyrometric bars for cone 03 firing Georgies Ceramic & Clay - Portland, OR

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02

BRB02 • 2048°F • $19.55
BRB02 Orton pyrometric mini bars for cone 02 Orton 2048° Fahrenheit Orton pyrometric bars for cone 02 firing

BRB02 $12.00 Orton pyrometric bars for cone 02 firing Georgies Ceramic & Clay - Portland, OR

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01

BRB01 • 2079°F • $19.55
BRB01 Orton pyrometric mini bars for cone 01 Orton 2079° Fahrenheit Orton pyrometric bars for cone 01 firing

BRB01 $12.00 Orton pyrometric bars for cone 01 firing Georgies Ceramic & Clay - Portland, OR

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1

BRB1 • 2109°F • $19.55
BRB1 Orton pyrometric mini bars for cone 1 Orton 2109° Fahrenheit Orton pyrometric bars for cone 1 firing

BRB1 $12.00 Orton pyrometric bars for cone 1 firing Georgies Ceramic & Clay - Portland, OR

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2

BRB2 • 2124°F • $19.55
BRB2 Orton pyrometric mini bars for cone 2 Orton 2124° Fahrenheit Orton pyrometric bars for cone 2 firing

BRB2 $12.00 Orton pyrometric bars for cone 2 firing Georgies Ceramic & Clay - Portland, OR

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3

BRB3 • 2134°F • $19.55
BRB3 Orton pyrometric mini bars for cone 3 Orton 2134° Fahrenheit Orton pyrometric bars for cone 3 firing

BRB3 $12.00 Orton pyrometric bars for cone 3 firing Georgies Ceramic & Clay - Portland, OR

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4

BRB4 • 2167°F • $19.55
BRB4 Orton pyrometric mini bars for cone 4 Orton 2167° Fahrenheit Orton pyrometric bars for cone 4 firing

BRB4 $12.00 Orton pyrometric bars for cone 4 firing Georgies Ceramic & Clay - Portland, OR

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5

BRB5 • 2185°F • $19.55
BRB5 Orton pyrometric mini bars for cone 5 Orton 2185° Fahrenheit Orton pyrometric bars for cone 5 firing

BRB5 $12.00 Orton pyrometric bars for cone 5 firing Georgies Ceramic & Clay - Portland, OR

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6

BRB6 • 2232°F • $19.55
BRB6 Orton pyrometric mini bars for cone 6 Orton 2232° Fahrenheit Orton pyrometric bars for cone 6 firing

BRB6 $12.00 Orton pyrometric bars for cone 6 firing Georgies Ceramic & Clay - Portland, OR

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7

BRB7 • 2264°F • $19.55
BRB7 Orton pyrometric mini bars for cone 7 Orton 2264° Fahrenheit Orton pyrometric bars for cone 7 firing

BRB7 $12.00 Orton pyrometric bars for cone 7 firing Georgies Ceramic & Clay - Portland, OR

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8

BRB8 • 2305°F • $19.55
BRB8 Orton pyrometric mini bars for cone 8 Orton 2305° Fahrenheit Orton pyrometric bars for cone 8 firing

BRB08 $12.00 Orton pyrometric bars for cone 8 firing Georgies Ceramic & Clay - Portland, OR

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9

BRB9 • 2336°F • $19.55
BRB9 Orton pyrometric mini bars for cone 9 Orton 2336° Fahrenheit Orton pyrometric bars for cone 9 firing

BRB9 $12.00 Orton pyrometric bars for cone 9 firing Georgies Ceramic & Clay - Portland, OR

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10

BRB10 • 2381°F • $19.55
BRB10 Orton pyrometric mini bars for cone and Orton 2381° Fahrenheit Orton pyrometric bars for cone 10 firing

BRB10 $12.00 Orton pyrometric bars for cone 10 firing Georgies Ceramic & Clay - Portland, OR

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Large Cones

The original Orton metric cones. LRB's are widely used as witness cones on kiln shelves to visually monitor firing progress and heatwork throughout the kiln. Large cones need to be supported by a cone plaque, a clay pat or a wire cone holder. Uniform mounting height and angle are very important. 50 per box. Shipped as pairs in the box. See above for splitting them apart.
We do not stock LRB022-LRB015. They are special order. Please call us for lead times.


MS517 • $2.50
3 Hole Cone Plaque

MS517 3 Hole Cone Plaque Orton pyrometric 3 Hole Cone Plaque for large Orton pyrometric cones

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CHS
Wire Cone Holders

CHS Wire Cone Holders Orton pyrometric Wire cone holders for large Orton pyrometric cones

Buy 1-5 ...
6-11 ...
12+ ...
$7.72 ea
$6.18 ea
$5.79 ea

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022*

LRB022 • 1094°F • $23.25 *special order*
LRB02 Orton pyrometric mini bars for cone 019 Orton 1094° Fahrenheit Orton pyrometric bars for cone 019 firing

LRB022 $17.95 Orton pyrometric bars for cone 019 firing Georgies Ceramic & Clay - Portland, OR

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021*

LRB021 • 1143°F • $23.25 *special order*
LRB021 Orton pyrometric mini bars for cone 019 Orton 1143° Fahrenheit Orton pyrometric bars for cone 019 firing

LRB021 $17.95 Orton pyrometric bars for cone 019 firing Georgies Ceramic & Clay - Portland, OR

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020*

LRB020 • 1180°F • $23.25 *special order*
LRB020 Orton pyrometric mini bars for cone 019 Orton 1180° Fahrenheit Orton pyrometric bars for cone 019 firing

LRB020 $17.95 Orton pyrometric bars for cone 019 firing Georgies Ceramic & Clay - Portland, OR

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019*

LRB019 • 1265°F • $23.25 *special order*
LRB019 Orton pyrometric mini bars for cone 019 Orton 1265° Fahrenheit Orton pyrometric bars for cone 019 firing

LRB019 $17.95 Orton pyrometric bars for cone 019 firing Georgies Ceramic & Clay - Portland, OR

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018*

LRB018 • 1337°F • $23.25 *special order*
LRB018 Orton pyrometric mini bars for cone 019 Orton 1337° Fahrenheit Orton pyrometric bars for cone 019 firing

LRB018 $17.95 Orton pyrometric bars for cone 019 firing Georgies Ceramic & Clay - Portland, OR

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017*

LRB017 • 1386°F • $23.25 *special order*
LRB017 Orton pyrometric mini bars for cone 019 Orton 1386° Fahrenheit Orton pyrometric bars for cone 019 firing

LRB017 $17.95 Orton pyrometric bars for cone 019 firing Georgies Ceramic & Clay - Portland, OR

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016*

LRB016 • 1443°F • $23.25 *special order*
LRB016 Orton pyrometric mini bars for cone 019 Orton 1443° Fahrenheit Orton pyrometric bars for cone 016 firing

LRB016 $17.95 Orton pyrometric bars for cone 019 firing Georgies Ceramic & Clay - Portland, OR

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015*

LRB015 • 1485°F • $23.25 *special order*
LRB015 Orton pyrometric mini bars for cone 015 Orton 1485° Fahrenheit Orton pyrometric bars for cone 015 firing

LRB015 $17.95 Orton pyrometric bars for cone 015 firing Georgies Ceramic & Clay - Portland, OR

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014

LRB014 • 1528°F • $23.25
LRB014 Orton pyrometric mini bars for cone 014 Orton 1528° Fahrenheit Orton pyrometric bars for cone 014 firing

LRB014 $17.95 Orton pyrometric bars for cone 014 firing Georgies Ceramic & Clay - Portland, OR

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013

LRB013 • 1566°F • $23.25
LRB013 Orton pyrometric mini bars for cone 013 Orton 1566° Fahrenheit Orton pyrometric bars for cone 013 firing

LRB013 $17.95 Orton pyrometric bars for cone 013 firing Georgies Ceramic & Clay - Portland, OR

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012

LRB012 • 1587°F • $23.25
LRB012 Orton pyrometric mini bars for cone 012 Orton 1587° Fahrenheit Orton pyrometric bars for cone 012 firing

LRB012 $17.95 Orton pyrometric bars for cone 012 firing Georgies Ceramic & Clay - Portland, OR

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014

LRB011 • 1623°F • $23.25
LRB011 Orton pyrometric mini bars for cone 011 Orton 1623° Fahrenheit Orton pyrometric bars for cone 011 firing

LRB011 $17.95 Orton pyrometric bars for cone 011 firing Georgies Ceramic & Clay - Portland, OR

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010

LRB010 • 1641°F • $23.25
LRB010 Orton pyrometric mini bars for cone 010 Orton 1641° Fahrenheit Orton pyrometric bars for cone 010 firing

LRB010 $17.95 Orton pyrometric bars for cone 010 firing Georgies Ceramic & Clay - Portland, OR

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09

LRB09 • 1693°F • $23.25
LRB09 Orton pyrometric mini bars for cone 09 Orton 1693° Fahrenheit Orton pyrometric bars for cone 09 firing

LRB09 $17.95 Orton pyrometric bars for cone 09 firing Georgies Ceramic & Clay - Portland, OR

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08

LRB08 • 1751°F • $23.25
LRB014 Orton pyrometric mini bars for cone 08 Orton 1751° Fahrenheit Orton pyrometric bars for cone 08 firing

LRB08 $17.95 Orton pyrometric bars for cone 08 firing Georgies Ceramic & Clay - Portland, OR

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07

LRB07 • 1803°F • $23.25
LRB07 Orton pyrometric mini bars for cone 07 Orton 1803° Fahrenheit Orton pyrometric bars for cone 07 firing

LRB07 $17.95 Orton pyrometric bars for cone 07 firing Georgies Ceramic & Clay - Portland, OR

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06

LRB06 • 1830°F • $23.25
LRB06 Orton pyrometric mini bars for cone 06 Orton 1830° Fahrenheit Orton pyrometric bars for cone 06 firing

LRB06 $17.95 Orton pyrometric bars for cone 06 firing Georgies Ceramic & Clay - Portland, OR

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05

LRB05 • 1915°F • $23.25
LRB05 Orton pyrometric mini bars for cone 05 Orton 1915° Fahrenheit Orton pyrometric bars for cone 05 firing
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04

LRB04 • 1940°F • $23.25
LRB04 Orton pyrometric mini bars for cone 04 Orton 1940° Fahrenheit Orton pyrometric bars for cone 04 firing
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03

LRB03 • 2014°F • $23.25
LRB03 Orton pyrometric mini bars for cone 03 Orton 2014° Fahrenheit Orton pyrometric bars for cone 03 firing
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02

LRB02 • 2048°F • $23.25
LRB02 Orton pyrometric mini bars for cone 02 Orton 2048° Fahrenheit Orton pyrometric bars for cone 02 firing
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01

LRB01 • 2079°F • $23.25
LRB01 Orton pyrometric mini bars for cone 01 Orton 2079° Fahrenheit Orton pyrometric bars for cone 01 firing
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1

LRB1 • 2109°F • $23.25
LRB1 Orton pyrometric mini bars for cone 1 Orton 2109° Fahrenheit Orton pyrometric bars for cone 1 firing
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2

LRB2 • 2124°F • $23.25
LRB2 Orton pyrometric mini bars for cone 2 Orton 2124° Fahrenheit Orton pyrometric bars for cone 2 firing
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3

LRB3 • 2134°F • $23.25
LRB3 Orton pyrometric mini bars for cone 3 Orton 2134° Fahrenheit Orton pyrometric bars for cone 3 firing
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4

LRB4 • 2167°F • $23.25
LRB4 Orton pyrometric mini bars for cone 4 Orton 2167° Fahrenheit Orton pyrometric bars for cone 4 firing
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5

LRB5 • 2185°F • $23.25
LRB5 Orton pyrometric mini bars for cone 5 Orton 2185° Fahrenheit Orton pyrometric bars for cone 5 firing
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6

LRB6 • 2232°F • $23.25
LRB6 Orton pyrometric mini bars for cone 6 Orton 2232° Fahrenheit Orton pyrometric bars for cone 6 firing
Qty:

7

LRB7 • 2264°F • $23.25
LRB7 Orton pyrometric mini bars for cone 7 Orton 2264° Fahrenheit Orton pyrometric bars for cone 7 firing
Qty:

8

LRB8 • 2305°F • $23.25
LRB8 Orton pyrometric mini bars for cone 8 Orton 2305° Fahrenheit Orton pyrometric bars for cone 8 firing
Qty:

9

LRB9 • 2336°F • $23.25
LRB9 Orton pyrometric mini bars for cone 9 Orton 2336° Fahrenheit Orton pyrometric bars for cone 9 firing
Qty:

10

LRB10 • 2381°F • $23.25
LRB10 Orton pyrometric mini bars for cone and Orton 2381° Fahrenheit Orton pyrometric bars for cone 10 firing
Qty:

11

LRB11 • 2399°F • $23.25
LRB11 Orton pyrometric mini bars for cone and Orton 2399° Fahrenheit Orton pyrometric bars for cone 11 firing
Qty:

 

Witness Cones

Self-supporting "witness" cones are the most accurate and easiest to use cones available. Cone holders or plaques are not needed. Many glaze and kiln manufacturers recommend use of witness cones to achieve best firing results.
25 cones per box.

022

SSB022 • 1094°F • $17.20
SSB022 Orton pyrometric Self-Supporting Witness Cones for cone 022 Orton 1094° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 022 firing
Qty:

021

SSB021 • 1143°F • $17.20
rometric Self-Supporting 'Witness' Cones for cone 021 Orton 1143° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 021 firing
Qty:

020

SSB020 • 1180°F • $17.20
rton pyrometric Self-Supporting 'Witness' Cones for cone 020 Orton 1180° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 020 firing
Qty:

019

SSB019 • 1265°F • $17.20
SSB019 Orton pyrometric Self-Supporting 'Witness' Cones for cone 019 Orton 1265° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 019 firing
Qty:

018

SSB018 • 1337°F • $17.20
SSB018 Orton pyrometric Self-Supporting 'Witness' Cones for cone 018 Orton 1337° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 018 firing
Qty:

017

SSB017 • 1386°F • $17.20
Orton pyrometric Self-Supporting 'Witness' Cones for cone 017 Orton 1386° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 017 firing
Qty:

016

SSB016 • 1443°F • $17.20
SSB016 Orton pyrometric Self-Supporting 'Witness' Cones for cone 016 Orton 1443° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 016 firing
Qty:

015

SSB015 • 1485°F • $17.20
SSB015 Orton pyrometric Self-Supporting 'Witness' Cones for cone 015 Orton 1485° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 015 firing
Qty:

014

SSB014 • 1528°F • $17.20
SSB014 Orton pyrometric Self-Supporting 'Witness' Cones for cone 014 Orton 1528° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 014 firing
Qty:

013

SSB013 • 1566°F • $17.20
SSB013 Orton pyrometric Self-Supporting 'Witness' Cones for cone 013 Orton 1566° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 013 firing
Qty:

012

SSB012 • 1587°F • $17.20
SSB012 Orton pyrometric Self-Supporting 'Witness' Cones for cone 012 Orton 1587° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 012 firing
Qty:

014

SSB011 • 1623°F • $17.20
yrometric Self-Supporting 'Witness' Cones for cone 011 Orton 1623° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 011 firing
Qty:

010

SSB010 • 1641°F • $17.20
SSB010 Orton pyrometric Self-Supporting 'Witness' Cones for cone 010 Orton 1641° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 010 firing
Qty:

09

SSB09 • 1693°F • $17.20
SSB09 Orton pyrometric Self-Supporting 'Witness' Cones for cone 09 Orton 1693° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 09 firing
Qty:

08

SSB08 • 1751°F • $17.20
4 Orton pyrometric Self-Supporting 'Witness' Cones for cone 08 Orton 1751° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 08 firing
Qty:

07

SSB07 • 1803°F • $17.20
SSB07 Orton pyrometric Self-Supporting 'Witness' Cones for cone 07 Orton 1803° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 07 firing
Qty:

06

SSB06 • 1830°F • $17.20
on pyrometric Self-Supporting 'Witness' Cones for cone 06 Orton 1830° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 06 firing
Qty:

05

SSB05 • 1915°F • $17.20
SSB05 Orton pyrometric Self-Supporting 'Witness' Cones for cone 05 Orton 1915° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 05 firing
Qty:

04

SSB04 • 1940°F • $17.20
SSB04 Orton pyrometric Self-Supporting 'Witness' Cones for cone 04 Orton 1940° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 04 firing
Qty:

03

SSB03 • 2014°F • $17.20
SSB03 Orton pyrometric Self-Supporting 'Witness' Cones for cone 03 Orton 2014° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 03 firing
Qty:

02

SSB02 • 2048°F • $17.20
SSB02 Orton pyrometric Self-Supporting 'Witness' Cones for cone 02 Orton 2048° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 02 firing
Qty:

01

SSB01• 2079°F • $17.20
B01 Orton pyrometric Self-Supporting 'Witness' Cones for cone 01 Orton 2079° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 01 firing
Qty:
 

1

SSB1• 2109°F • $17.20
SSB1 Orton pyrometric Self-Supporting 'Witness' Cones for cone 1 Orton 2109° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 1 firing
Qty:

2

SSB2 • 2124°F • $17.20
SSB2 Orton pyrometric Self-Supporting 'Witness' Cones for cone 2 Orton 2124° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 2 firing
Qty:

3

SSB3 • 2134°F • $17.20
SSB3 Orton pyrometric Self-Supporting 'Witness' Cones for cone 3 Orton 2134° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 3 firing
Qty:

4

SSB4 • 2167°F • $17.20
SSB4 Orton pyrometric Self-Supporting 'Witness' Cones for cone 4 Orton 2167° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 4 firing
Qty:

5

SSB5 • 2185°F • $17.20
SSB5 Orton pyrometric Self-Supporting 'Witness' Cones for cone 5 Orton 2185° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 5 firing
Qty:

6

SSB6 • 2232°F • $17.20
Qty:

7

SSB7 • 2264°F • $17.20
SSB7 Orton pyrometric Self-Supporting 'Witness' Cones for cone 7 Orton 2264° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 7 firing
Qty:

8

SSB8 • 2305°F • $17.20
SSB8 Orton pyrometric Self-Supporting 'Witness' Cones for cone 8 Orton 2305° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 8 firing
Qty:

9

SSB9 • 2336°F • $17.20
SSB9 Orton pyrometric Self-Supporting 'Witness' Cones for cone 9 Orton 2336° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 9 firing
Qty:

10

SSB10 • 2381°F • $17.20
Orton pyrometric Self-Supporting 'Witness' Cones for cone and Orton 2381° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 10 firing
Qty:

 

 

Witness Cone Sample Sets

Self-supporting "witness" cones are the most accurate and easiest to use cones available. Cone holders or plaques are not needed. Kiln manufacturers recommend use of witness cones to verify accurate firing temperatures.
Cannot combine temps; all packages sold with 5 of the same cones per package.
For Low Fire and Bisque Firing ...

06

SSB06T • 1830°F • $5.00
on pyrometric Self-Supporting 'Witness' Cones for cone 06 Orton 1830° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 06 firing
Qty:

05

SSB05T • 1915°F • $5.00
SSB05 Orton pyrometric Self-Supporting 'Witness' Cones for cone 05 Orton 1915° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 05 firing
Qty:

04

SSB04T • 1940°F • $5.00
SSB04 Orton pyrometric Self-Supporting 'Witness' Cones for cone 04 Orton 1940° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 04 firing
Qty:
For Mid Range Firing ...

5

SSB5T • 2185°F • $5.00
SSB5 Orton pyrometric Self-Supporting 'Witness' Cones for cone 5 Orton 2185° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 5 firing
Qty:

6

SSB6T • 2232°F • $5.00
Qty:

7

SSB7T • 2264°F • $5.00
SSB7 Orton pyrometric Self-Supporting 'Witness' Cones for cone 7 Orton 2264° Fahrenheit Orton pyrometric Self-Supporting 'Witness' Cones for cone 7 firing
Qty:

All contents related to Georgies' products copyright 2026. All rights reserved.
Georgies Ceramic & Clay Co. • 756 NE Lombard • Portland OR 97211
Phone: 503-283-1353 • Email: info@georgies.com
Store Hours: Monday-Friday 9:00a-5:00p Pacific time • CLOSED Saturday & Sunday
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