Orton | SSB04
Self Supporting Pyrometric Cone 04
Cone 04 in Orton's self supporting series. It stands on the shelf on its own moulded base, so there is no plaque to set and no mounting height to get wrong, and its bend after the firing shows whether the ware reached cone 04.
$25
Suggested retail price. In-store prices and availability may vary by location.
This is Cone 04 in Orton's self supporting SSB series. Orton lists it bending at 1046°C (1915°F) at 15°C an hour, 1063°C (1945°F) at 60°C an hour and 1077°C (1971°F) at 150°C an hour, each measured over the last 100°C of the firing. A cone responds to time and temperature together, not temperature alone, so the rate the kiln is climbing at decides which of those numbers applies. The base is moulded into the cone, so it stands on the kiln shelf straight from the box with no plaque or wire holder, and the height and 8 degree lean are set at the factory. That makes it the usual choice for witness cones and test firings. Orton lists cones in this part of the range for craft and art bodies, wall tile and glazes. Cones 010 through 3 are red iron bearing and can come out matte, green or bloated if the kiln is short of oxygen, so Orton makes the Iron Free SSK series across that range for reduction firing. It has finished bending when the tip is level with the base.
- Cone 04
- Bends 1046°C (1915°F) at 15°C an hour
- Bends 1063°C (1945°F) at 60°C an hour
- Bends 1077°C (1971°F) at 150°C an hour
- 63.5 mm (2½ in) tall
- Base moulded in, no plaque, clay pat or wire holder needed
- Height and 8 degree lean set at the factory
- Finished when the tip is level with the base
- Red iron bearing, Orton's Iron Free SSK series covers this number for reduction
Downloads
Orton’s cone charts and guide to cones and firing.
