Techniques of Glazing

Question 1

What are the 3 main ingredients in glaze?

Answer 1

Silica, Flux, Alumina

Question 2

Silica

Answer 2

Is similar to finely ground glass. It has a high melting point

Question 3

Flux

Answer 3

Lowers melting point of silica., Increases fusibility, various material can act as a flux

Question 4

Alumina

Answer 4

Gives glaze stability and adhesion

Question 5

List 4 methods of applying a glaze

Answer 5

Dipping, Brushing, Pouring, Spraying

Question 6

Describe Dipping

Answer 6

Immersing piece directly into glaze. (Window dipping: double dip only)

Question 7

Describe Brushing

Answer 7

Best technique for hand built work, nice for multiple areas of different colors, apply 3 heavy coats of glaze

Question 8

Describe Pouring

Answer 8

Best for large bowls, platters, and plates, also good for glazing the inside of your work

Question 9

Describe Spraying

Answer 9

turn on fan, prime with water, spray glaze, flush clean with water. Don’t touch glaze after spraying

Question 10

What color is Cobalt Carbonate?

Answer 10

Blue

Question 11

What color is Iron

Answer 11

silver/grey

Question 12

What color is Manganese?

Answer 12

Pinkish/red/purple

Question 13

What color is Tin Oxide?

Answer 13

Red

Question 14

What color is Chrome Carbonate?

Answer 14

Green

Question 15

What are the two last things you do before you put your project on the ready shelf?

Answer 15

wipe all glaze off the bottom, apply one coat to the last 1/4 inch from the bottom

Question 16

Why do we wax our pots and how do you do it properly?

Answer 16

wax creates a barrier so glaze won’t stick on it, wax bottom and 1/4 inch up

Question 17

Identify the 8 “special techniques?

Answer 17

Underglaze, Banding,Sponge Patterning, Masque, Wax resist design, Iron Oxide wash, Scratch technique, Lusters

Question 18

Describe Underglaze

Answer 18

doesn’t vitrify on its own, must be applied under or over a glaze

Question 19

Describe Banding

Answer 19

Painting bands or rings of glaze as the circular piece spins on the wheel

Question 20

Describe Sponge Patterning

Answer 20

Using a sponge to make representational or non-representational designs that you dab all over the piece with glaze

Question 21

Describe Masque

Answer 21

another sponge technique

Question 22

Describe wax resist design

Answer 22

Applying wax design over glazed areas

Question 23

Describe Iron Oxide Wash

Answer 23

painting iron wash over the texture of a piece than wiping off as much as you want with a sponge

Question 24

Describe Scratch Technique

Answer 24

scratch a design through the glaze then go over with a contrasting glaze color

Question 25

Describe Lusters

Answer 25

Metallic glaze coat, fires at a different temperature

Question 26

What is the cause glaze crawling?

Answer 26

Cause: the glaze being applied too thick, bisque ware was dirty or dusty

Question 27

How thick should the glaze be in the bucket and on the pot?

Answer 27

like cream, (thicker than milk, thinner than cake batter)

Question 28

What is the and effect of glaze crawling?

Answer 28

Effect: glaze pulls away from pot and runs off