Work
is
put
through
a
first
firing
,
typically
1000°C
,
called
a
____________________
Firing
-
that
is
followed
by
a
subsequent
glaze
firing
.
This
turns
it
into
____________________
,
a
clay
that
has
been
fired
high
enough
that
it
can
no
longer
be
recycled
into
wet
clay
.
____________________
can
be
sprayed
,
poured
or
dipped
,
and
when
fired
produces
an
impervious
glass
like
surface
.
Testing
glazes
using
____________________
and
____________________
blends
can
help
adjust
recipes
.
Glaze
firings
happen
at
two
temperature
ranges
-
Low
fired
usually
under
1200°C
,
with
high
porosity
(
Porous
)
and
a
separate
glaze
layer
over
the
body
.
is
called
____________________
.
High
fired
usually
above
1200°C
,
with
low
porosity
(
Not
Porous
)
and
an
integration
of
the
glaze
and
the
body
is
called
____________________
.
____________________
cones
are
used
to
check
the
____________________
inside
the
kiln
.
Shelves
are
prepainted
with
____________________
wash
/
kiln
wash
to
protect
them
from
glaze
drips
.
Work
can
be
placed
on
____________________
so
a
glazed
surface
does
not
touch
the
kiln
shelf
,
work
may
also
be
placed
on
small
prefired
clay
slabs
(
____________________
)
or
over
____________________
sand
(
which
can
also
be
used
under
large
pieces
where
shrinkage
could
cause
cracks
,
to
enable
some
movement
)
to
protect
shelves
further
.
A
____________________
firing
is
used
to
control
the
amount
of
oxygen
around
work
during
firing
.
In
a
reduced
atmosphere
oxygen
within
the
glaze
is
drawn
out
this
affects
the
____________________
that
can
be
achieved
(
copper
changes
from
green
to
red
)
.
When
oxygen
levels
are
not
reduced
the
firing
is
called
an
____________________
firing
.
Some
alternative
firings
are
done
at
a
lower
temperature
,
fired
in
an
outdoor
gas
kiln
and
instead
of
allowing
work
to
cool
down
in
the
kiln
,
it
is
taken
out
while
hot
.
Low
fire
glazes
are
used
in
a
____________________
firing
where
work
is
cooled
quickly
in
the
air
.
It
can
also
be
sprayed
or
submerged
in
water
while
hot
,
or
placed
in
combustible
material
like
wood
shavings
or
sawdust
,
this
has
a
localised
reaction
similar
to
the
gas
kilns
reduction
firing
,
____________________
firing
is
when
hot
pieces
are
placed
in
metal
bins
of
combustible
material
(
wood
shavings
and
newspapers
)
and
colourants
(
optional
)
.
The
porous
nature
of
the
low
fired
clay
allows
patterns
to
be
absorbed
into
the
surface
.
In
a
combustible
firing
work
can
also
be
wrapped
in
combustible
material
,
and
then
in
clay
boxes
,
aluminium
foil
,
or
newspaper
.
This
container
is
called
a
____________________
.
An
outdoor
firing
in
a
hole
filled
with
combustible
material
and
left
overnight
to
smoke
is
called
a
____________________
Firing
.
Low
fired
Porous
ceramics
take
on
designs
from
the
smoke
absorbed
and
reactions
with
combustibles
including
____________________
materials
and
colourants
.
