Ceramics 5-6 Quiz

Crazing

• common glaze defect

• easy to correct

• when thermal expansion characteristics of body and glaze differ

Shivering

• glaze defect

• small, sharp, jagged-edged pieces that detach themselves from the body of work

• reverse of crazing

• dangerous because it can get into food

Crawling

• caused by high index of surface tension in melting glaze

• caused by bad application

• characteristics: excessively powdery and does not fully adhere to surface

• alleviated by adding small amount of gum to glaze or extra flux

• common in matte glaze

• in excess fluxes (i.e. zinc or magnesium) can cause crawling

Pitting/Pinholing

• Caused by badly controlled firing cycle, glaze composition, or from the body of piece (i.e. white clay that has high grogg)

Blistering

• AKA bless

• result of excessively thick application of glaze, incomplete clay prep, wedging, bulging, etc.

• also can be due to overfishing or soluble fluxes in glaze

  • ex. borax, boric acid, potassium carbonate, magnesium sulfate, sodium carbonate

Acoma pottery

• Geometric designs

• nature inspired pieces

• intricate designs

Why is the wedge we use called ram’s head wedge?

Because it is triangular & spirals around to form the “ram horns”

Who is this artist?

• JR

• Known for: large black & white murals

What is David Binns known for?

Granite feldspars

Pueblo of Acoma is located where?

New Mexico

Who is this artist?

• Patia Davis

• known for screw top lids, layers her slip to glaze

Acoma Brushes are made of what?

Yucca Bush

Name two joint types for slab building

Butt & miter

4 Surface treatments?

• sgraffito

• mishima

• carve relief

• stamp texture

Who is this artist?

• Georgie Gardner

• Makes large jars

• uses engine over paper stencils to create layered surface

Who is this artist?

• Martin Pierce

• abstract forms through intuitive feel

• uses stoneware with grog

Glaze: coating that is used for surface design