1. Submitted by : Anjali Kumari
Reg no : 11709630
Submitted to : Shyam Singh Rawat
Process of Glazed
potteries
CA- 4
2. Pottery
• Pottery is the process of forming
vessels and other objects with clay
and other ceramic materials
• fired at high temperatures to give
them a hard, durable form.
• Major types include earthenware,
stoneware and porcelain
3. Types of pottery construction technique
• Pinch Pot - the clay walls are thinned
by pinching them with thumb and
forefinger.
• Coiled Pottery - Clay shapes such
as bowls are built up by
using coils of pliable clay, putting
one on top of another
4. Slab Built- Clay slabs a cut into shape and
joined together using scoring and wet clay
called slips
• Wheel Thrown- clay is placed on the
potter's wheel head which spins. The clay is
shaped by compression while it is in motion.
5. • Leather hard : Clay is dry enough to maintain &wet enough to carved
and added to
• Bone dry : Clay is dried enough before its first firing and is extremely
brittle
• Bisque: Firing where all remaining water molecules are released from
the clay transforming in ceramic
• Glaze firing : Second firing where glaze has melted into the ceramic
Surface making it non porous
Stages of clay
6. • Once clay has completely dried out
and has entered the green ware it is
put into the Kiln and fired
• A kiln is a ceramic oven
• Firing is when temperature inside the
kiln is brought up to about 1900
degrees.
Bisque fire
7. • Glazing is when you paint a thin layer of
minerals and glass into a fired or unfired
ceramic piece.
• Glaze is a glossy coating on ceramic. The
word glaze means any extra surface
coating.
• The primary purpose of using glazes are
for decoration, waterproofing and
protection.
What is Glazing
8. • Silica – Creates glass Example: quartz,
flint, pure silica.
• Alumina – Stiffens the glaze so it doesn’t
slide off the clay Example: kaolin, ball
clay, or fire clay.
• Flux - Causes the glaze to melt at a low
temperature to be used in ceramics
Examples: feldspar, whiting.
Glaze is made of :
9. • Never apply glaze in the
bottom of object
• Dipping/Dunking- Easy to
use, cheaper to buy, difficult
to prepare.
• Airbrushing- Used primarily
in commercial application,
expensive to maintain.
Ways to apply glaze
10. • Painting- Most high school.
Expensive, but ready to go out
of bottle.
• Sponging- The texture of the
sponge can translate into very
interesting patterns in the fired
glaze.
• Pouring in and out-Glazes for
pouring need to be the same
consistency as dipping glazes
11. Glaze firing
• After the glaze is painting on your
ceramic piece it will go back into
kiln for a second fire
- The kiln heats up to only about
1700 degrees this time.
- This changes the glazes to their
final looks
12. • Cones. A pyramid-shaped ceramic device used
to quantify the amount of heat delivered by a
kiln.
• Low fire: Cone 0-6 (up to 1200) bright color
which are difficult to get at higher temperature.
• Mid fire: Fall in between and are fired at cone
4-6 (1160-1200)
• High fire: Maximum stage of firing cone 9-10
(1280-1300 c)
Glazes temperature
