ceramics 1 pretest notes
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Ceramics 1 Pretest Notes. Attention!!!. There will be a test over this information that you must pass with a 75% before you can work with clay. Complete the questions from the textbook first. 1-12. Wedging. How to wedge clay. From the teacher:. - PowerPoint PPT PresentationTRANSCRIPT
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CERAMICS 1 PRETEST NOTES
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Attention!!! There will be a test over this
information that you must pass with a 75% before you can work with clay.
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Complete the questions from the textbook first 1-12
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Wedging How to wedge clay
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From the teacher: 1. Dry clay goes in a bucket because it
is recyclable. 2. Wet clay goes in a bag. 3. Slip is liquid clay.
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Take the terms I will show you and write them down in your own words. Make sense of it using things you already know about. Sketch it out. Do not copy the screen. Funny example (but the wrong answer)-“The math
teacher saw that Larry wasn't paying attention in class. She called on him and said, 'Larry! What are 2 and 4 and 28 and 44?' Larry quickly replied, 'NBC, FOX, ESPN and the Cartoon Network!' “
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4. The 6 stages of clay and describe Wet Leatherhard Bone dry Greenware Bisque ware Glaze ware
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Wet clay Working with really wet clay
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Leatherhard clay Working with leatherhard clay
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Bone dry clay: completely dry
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Greenware: Unfired pottery or sculpture
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Bisqueware: clay that has been fired once in the kiln and is now ceramic
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Glaze Ware: ware that has been fired with glaze
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5. Wedging: a way of improving the workability of clay by reforming the mixture to make it homogeneous and even in texture while eliminating air bubbles.
Wedging clay
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6. Once clay has been fired to over 1115 degrees F, it becomes ceramic.
It can never be clay AGAIN! Discuss #7 on the page.
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Tools Bat: two meanings
The plaster is porous, and soaks up the physical water from the clay. I will allow enough water to be drawn out of the clay so that it is once again useable, or plastic, capable of being shaped on the potter’s wheel.
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Cutting wire: a wire used for cutting clay
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canvas Cover the board or table with canvas so
the clay won’t stick to it.
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Slab strips To help you roll out a slab that is an
even thickness
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Rib or kidney Used for hand- building or wheel
throwing to smooth and shape clay, made of wood, rubber or metal
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Potter’s needle Use it for scoring clay or for cutting off the rim of a
pot on the potter’s wheel. One of the primary uses of the potter's needle is to get an accurate measure of how thick a slab or the floor of a pot is.
It is not a pencil! Clay is not paper! It is also not a shank.
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Modeling tools These tools are very useful for creating
smooth edges, or curves on items to be modeled.
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Loop tools For carving and removing clay
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Fettling knife Mainly used for cutting slabs of clay
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Stamps: used to make impressions in clay
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Slip trailer or underglaze applicator Slip Trialing demo
You can create these decorations with glaze or well blended slip.
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Potter’s wheel A potter's wheel is a machine used in
the shaping 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 color.
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Splash guards It keeps the extra water from going
everywhere when you throw.
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Wooden paddle: the wooden paddle is an inexpensive wood tool designed to shape clay leaving a smooth texture behind.
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Banding wheel: a wheel head mounted on a pedestal base and turned by hand, used in the formation and decoration of pots.
Using a banding wheel to glaze
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Pug mill: A pugmill is a fast continuous mixer used for recycling clay.
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Wedging table: a table covered with canvas and/or plaster used for wedging clay
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5 hand-building methods Pinching Coiling Slab building Drape molding Press molding
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Pinching: a hand-building technique that involves squeezing the clay, usually between fingers and thumb.
How to make a small pinch pot bowl
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Coiling: attaching rolls of clay together to form pottery Rolling coils
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Slab building: hand-building technique that involves shaping clay into a broad, flat, thick piece. Like rolling out and cutting cookie dough.
How to roll out a slab by hand
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Drape molding: using a drape mold to hold the clay slab in a certain shape until it stiffens
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Press molding: making shapes by pressing the clay slab into or onto molds.
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Glazing Techniques
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Brushing: applying glaze with a brush-needs 3 coats
Dipping: a method of applying glaze or slip to a piece by immersing it and quickly shaking off the excess liquid. This applies 3 coats.
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Pouring: pouring glaze onto or into a pot. This method is great for the inside of a pot. This applies 3 coats.
.
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Sponging: applying glaze with a sponge.
Slip trailing: applying glaze or slip with a slip trailer to make fine lines or dots
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Spraying: Using a spray gun and spray booth to apply glaze. It applies a fine, even coating of glaze.There will be safety instructions for this later.
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Firing Bisque firing- Cone 05, temp= 1886° F Glaze firing- Cone 6, temp=2266° F Put wax resist on the foot of the pot. Before bisque firing, the ware must be in
what condition? __________ Glazes can be clear, transparent, semi-
transparent, semi-opaque, or opaque. See next slide for examples
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Clear
Transparent
Semi-transparent
Translucent
Semi-opaque
opaque