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Ceramic Hand-Building: Slab Method
Transcript of Ceramic Hand-Building: Slab Method
Sgrafitto Slipping and Scoring Hand building pottery using slabs of clay is an exciting way to create shapes that could never be produced using a potter's wheel or that would be difficult to achieve even with coiling. Slab pots are being produced by contemporary potters in a plethora of styles and using a number of techniques.
•Slab rollers: large pieces of equipment that enable potters to roll large slabs to uniform thicknesses very rapidly.
•Extruders: an extruded pipe can be cut through the middle to form a slab.
•Hand Tossing: slab can be formed by tossing the clay onto a hard surface at an angle. The resulting slabs are not uniform in thickness and can give an organic feel to a piece.
Slabs that have just been freshly rolled out and are still very damp The stiff-slab method is more appropriate for architectural and geometric forms. The slab is rolled then allowed to slowly dry to to leather-hard stage before being cut and joined with other stiffened slabs to create the form.
A method of decorating or designing a surface, as of paint, plaster, slip, or glaze, by scratching through a layer of one color to expose a different color underneath. Sgraffito is an Italian word literally meaning to scratch. The plural form is sgraffiti. Ann Sacks
Decorative tiles Holly Walker Sandi Pierantozzi Hayne Bayless Terms to KNOW
Bone dry: Once a clay project is bone dry, nothing else can be joined to it or done to it safely except some careful scratching or polishing, and it is very difficult to re-wet it into a workable state.
Leather Hard: Clay dried sufficiently to be stiff and no longer plastic, but still damp enough to be joined to other pieces with slip
Greenware: Unfired pottery
Bisqueware: Fired unglazed pottery; ceramic ware that is durable yet porous. liquid mixture of clay and varying amounts of water. Scoring clay is also a method potters use to adhere two pieces of clay together. Simply use any pointed utensils, like a pen, pencil, toothpick, or clay tools to make X shaped marks into the clay where you will be adhering another piece. This helps hold the two pieces of clay together while you work. It breaks up the surface area of the clay, which is needed for a good adhesion between the two pieces.