Pit fired pottery
Pit firing is the oldest known method for the firing of pottery. Examples have been dated as early as 29,000–25,000 BCE.[1][2] Kilns have since replaced pit firing as the most widespread method of firing pottery, although the technique still finds limited use amongst certain studio potters.
Unfired pots are nestled together in a pit in the ground and are then covered with combustible materials such as wood shavings, leaves, metal oxides, salts, sawdust and dried manure. The top of the pit may be protected with moist clay, shards, larger pieces of wood or metal baffles. The filled pit is then set on fire and carefully tended until most of the inner fuel has been consumed. At around 1,100°C (2,000°F) the maximum temperatures are moderate compared to other techniques used for pottery.[3] After cooling, pots are removed and cleaned to reveal patterns and colours left by ash and salt deposits. Pots may then be waxed and buffed to create a smooth glossy finish.[4]
References
- ↑ "Modern Ceramic Engineering: Properties, Processing And Use In Design." D.W. Richerson. CRC Press. 2006.
- ↑ "On the Origins of Pottery." P.M.Rice. Journal of Archaeological Method and Theory. Vol 6, No.1. 1999.
- ↑ "Ceramics: A Potter's Handbook." G.Nelson. Holt, Rinehart & Winston. 1984.
- ↑ "Mastering Raku." S.Branfman. Sterling Publishing Company. 2009.
- Hamer, Frank and Janet. The Potter's Dictionary of Materials and Techniques. A & C Black Publishers, Limited, London, England, Third Edition 1991. ISBN 0-8122-3112-0.
