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Morells Barn • Park Lane • Lower Bognor Road • Lagness • Chichester • West Sussex • PO20 1LR
Telephone: 01243 265845 • Fax: 01243 267582
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Stock Clearance

All items listed in this section are discontinued, end of line or over stocked items
just offered at extremely attractive prices. Stocks are limited, so act fast!

All Prices shown are with discounts applied.


Orton Midget Cones & Pyro Bars
PLEASE NOTE: There may be some broken bars/cones and/or shortages in packs which is reflected in the discounted price.
Code Orton Midget Cones Box of 50
Firing Range: Varies
8610/03/50 ORTON MIDGET CONE - SIZE 03 SOLD OUT
8610/05/50 ORTON MIDGET CONE - SIZE 05 0.75
8610/6/50 ORTON MIDGET CONE - SIZE 6 SOLD OUT
8610/7/50 ORTON MIDGET CONE - SIZE 7 SOLD OUT
8610/8/50 ORTON MIDGET CONE - SIZE 8 0.75
8610/9/50 ORTON MIDGET CONE - SIZE 9 0.75
8610/10/50 ORTON MIDGET CONE - SIZE 10 0.75
Code Orton PyroBars Box of 10
Firing Range: Varies
8615/01/10 ORTON PYRO-BAR - SIZE 01 SOLD OUT
8615/03/10 ORTON PYRO-BAR - SIZE 03 0.50
8615/06/50 ORTON PYRO-BAR - SIZE 06 0.75
8615/3/10 ORTON PYRO-BAR - SIZE 3 0.50
8615/5/10 ORTON PYRO-BAR - SIZE 5 0.50
8615/7/10 ORTON PYRO-BAR - SIZE 7 0.50
8615/10/10 ORTON PYRO-BAR - SIZE 10 0.50
The composition and structure of cones is such that they bend and deform when subjected to heat for a period of time, (i.e. their operation is dependent upon “heat work” and not upon temperature only. They are graded according to the amount of heat they will withstand and are placed upright in holders in the kiln where they can be viewed from the spyhole.

Since their deformation characteristics mirror the maturing characteristics of the ceramic products being fired, cones provide an outstanding method of indicating heat work carried out during a firing.

It is usual to use a set of three consecutive cones: one to bend below the optimum firing point, one at the optimum firing point and one above. Orton Pyro-bars are supplied for use in kiln-sitters and mirror similar characteristics to that of cones.

Following recalibration in 1996 the cones marked * now bend 10-20°C later than previously.

Please refer to the table below to ensure you choose the correct cone

Heating rate °C per hour
Cone
60°C
100°C
150°C
018
712
722
732
017
736
748
761
016
769
782
794
015
788
802
816
014
807
822
836
013
837
848
859
012
858
869
880
011
873
883
892
09
917
922
928
08
942
948
954
07
973
979
985
06
995
1002
1011
05
1030
1038
1046
04
1060
1065
1070
03
1086
1093
1101
02
1101
1110
1120
01
1117
1127
1137
1
1136
1147
1154
2
1142
1152
1162
3
1152
1160
1168
4
1160
1171
1180
5*
1184
1194
1205
6*
1220
1230
1241
7*
1237
1246
1255
8*
1247
1259
1270
9
1260
1270
1280
10
1282
1293
1303
11
1293
1303
1312
Call 01243 265845 or fax 01243 267582 or email sales@claymansupplies.co.uk now!