2Clay Stages - what?The nature of clay changes with it’s moisture content.It’s physical properties and possibilities change progressively as it dries.Unprepared clay in it’s natural state is called raw clay
3Stage 1 Slip Clay and water mixed to produce a liquid More water added = more shrinkageSometimes used as a decoration:Colored SlipsEngobesCan be poured
4Stage 2 SlurryVery thick slipUsed as a glue for sticking two pieces of leather hard clay togetherNot thin enough to be poured, but thick enough to stick to your fingers
5Sufficiently hard and dry to allow modeling and manipulation Stage 3 PlasticSufficiently hard and dry to allow modeling and manipulation“Right out of the bag”Does not stick to your fingers and can be manipulated. This clay has the consistency of bread dough
6Stage 4 Leather Hard Partly dry clay Feels solid, yet may be cut, carved, stamped, and stuck together with slurryCan not be manipulated like bread dough, but can still have more clay attached to it
7Stage 5 Green ware Dry, unfired work Lost weight and shrunk Color has changed and the clay can no longer be joined togetherCan no longer have more clay attached to it, but will dissolve and turn to slipThis is the last stage of clay that can be recycled!!!!!!!!
8Will not dissolve in water, but will let water pass through it Stage 6 BisqueFirst kiln fireComplete change in nature and colorRetains shape in water and is now porousCan now be decorated with glazesWill not dissolve in water, but will let water pass through it
9Stage 7 Mature Second, glaze fire Hard, rock-like Vitrified Water will not pass through it
10Clay Stages, why is knowing about them important to potters?