Orton | SSB7
Self Supporting Pyrometric Cone 7
Cone 7 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 7.
$25
Suggested retail price. In-store prices and availability may vary by location.
This is Cone 7 in Orton's self supporting SSB series. Orton lists it bending at 1201°C (2194°F) at 15°C an hour, 1239°C (2262°F) at 60°C an hour and 1257°C (2295°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 porcelain, stoneware, china and floor tile. It has finished bending when the tip is level with the base.
- Cone 7
- Bends 1201°C (2194°F) at 15°C an hour
- Bends 1239°C (2262°F) at 60°C an hour
- Bends 1257°C (2295°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
Downloads
Orton’s cone charts and guide to cones and firing.
