Collect information of the ‘Potter’s Wheel’. How does the potter prepare the clay to
make pots? Paste relevant pictures and write the information in the note book.
Answers
Answer:In pottery, a potter's wheel is a machine used in the shaping (known as throwing) of round ceramic ware. The wheel may also be used during the process of trimming the excess body from dried ware, and for applying incised decoration or rings of colour. Use of the potter's wheel became widespread throughout the Old World but was unknown in the Pre-Columbian New World, where pottery was handmade by methods that included coiling and beating.
Much early ceramic ware was hand-built using a simple coiling technique in which clay was rolled into long threads that were then pinched and smoothed together to form the body of a vessel. In the coiling method of construction, all the energy required to form the main part of a piece is supplied indirectly by the hands of the potter. Early ceramics built by coiling were often placed on mats or large leaves to allow them to be worked more conveniently. The evidence of this lies in mat or leaf impressions left in the clay of the base of the pot. This arrangement allowed the potter to rotate the vessel during construction, rather than walk around it to add coils of clay.
Explanation:
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Answer:
Techniques of throwing
Hand positions used during wheel-throwing
There are many techniques in use for throwing ceramic shapes, although this is a typical entry-level procedure:
A recently wedged, slightly lumpy clump of plastic throwing clay is slapped, thrown, or otherwise affixed to the wheel-head or a bat. A bat serves as a proxy wheel-head that can be removed with the finished pot. The wedged clay is centered by the speed of the wheel and the steadiness of the potter's hands. Water is used as a lubricant to control the clay and should be used sparingly as it also weakens the clay as it gets thinner. It is important to ease onto and off of the clay so that the entire circumference receives the same treatment. high speed on the wheel (240-300 rpm) makes this operation much easier with less physical exertion needed by the potter. The potter will sit or stand with the wheel-head as close to their waist as possible, allowing them more stability and strength. The wheel is sped up and the potter brings steady, controlled pressure onto the clay starting with the blades of the hands where the clay meets the wheel, working your way up. When the clay is centered the clay needs to be homogenized. The more shear (engineering definition) energy that is applied to the clay, the more strength it has later in pulling up the walls and allows the potter to throw faster and with thinner walls. The operation is sometimes called exercising or wheel wedging the clay and consists of thinning and applying shear energy to as much of the clay as possible while keeping the clay whole and centered. After wheel wedging and centering the clay the next step is to open the clay and set the floor of the pot. This is still done at high speed so that the clay in the floor of the pot receives enough shear energy. To open the clay, softly feel for the center of the clay, having your finger in the center will require the least amount of work. Once you have found center push down towards the wheel-head to set the floor thickness of the pot. When you have established the floor thickness, pull the clay out to establish the floor width. The ring of clay surrounding the floor is now ready to be pulled up into the walls of the pot. The first pull is started at full or near full speed to thin the walls. For right-handed potters working on a wheel going counter-clockwise the left hand is on the inside of the ring on the right hand on the outside at the right tangent of the wheel. The second and third pulls establish the thickness and shape.
Explanation:
In pottery, a potter's wheel is a machine used in the shaping (known as throwing) of round ceramic ware. The wheel may also be used during the process of trimming the excess body from dried ware, and for applying incised decoration or rings of colour. The use of the potter's wheel became widespread throughout the Old World but was unknown in the Pre-Columbian New World, where pottery was handmade by methods that included coiling and beating.
A potter's wheel may occasionally be referred to as a "potter's lathe". However, that term is better used for another kind of machine that is used for a different shaping process, turning, similar to that used for the shaping of metal and wooden articles.
The techniques of jiggering and jollying can be seen as extensions of the potter's wheel: in jiggering, a shaped tool is slowly brought down onto the plastic clay body that has been placed on top of the rotating plaster mould. The jigger tool shapes one face, the mould the other. The term is specific to the shaping of flatware, such as plates, whilst a similar technique, jollying, refers to the production of hollowware, such as cups.