Large Pyrometric Cones #4 (50 box) - Orton Specialty Clays Included with the jars is

Included with the jars is the correct quantity of alumina balls

Made of cherry heartwood

from cement to dark grey

apply 1 thick or 2 thin coats

This also provides excellent behaviour whilst drying and firing

Large Pyrometric Cones #4 (50 box) - Orton Specialty Clays Included with the jars isOrton Large Pyrometric Cones #4 Box of 50 units Heating Rate Temperature Equivalence 60C hr (Medium) 1160C 150C hr (Fast) 1181C Explanation: Medium: The melting point of the cone at a slow rate of temperature change of 60C per hour, will be 1160C. Fast: The melting point of the cone at a fast rate of temperature change of 150C per hour, will be 1181C. General Information: Large Pyrometric Cones allow users a practical method to monitor the heatwork