The hairs of the paintbrush
come from a red sable, which are then dipped into several pastes so they retain
their shape. When the heads are complete, the wooden handles are dipped into
black lacquer paint for a shimmering finish.
Watch full episodes of the
Science Channel series "How It's Made" on the Science GO app or
sciencechannel.com.
[Music]
an experienced head maker
performs the
initial steps of making the
head of the
paintbrush she unrolls and
straightens
out a bundle of red sable
then separates
enough hairs for one brush
of this size
she inserts the hairs into
a metal band
called a ferrule made of
nickel-plated
brass she feels how they
fit in the
ferrule if the fits too
tight she
removes some hairs if it's
too loose she
adds some brushes of
different shapes
required different tensions
the head
maker takes the correct
brass mold for
the brush shape she's
making and inserts
the hairs all the way down
into the mold
cavity she ties the roots
of the hairs
together with the string
then removes them from the
mold she
inserts the brush head back
into the
ferrule then removes the
string she dips
the hairs into a solution
of starch and
water and works the
solution into all
the hairs by massaging the
head on a
towel the starch allows the
hairs to be
trained to a permanent
shape she makes
this particular point its
shape by
spinning the head then
smoothing the
hairs with her fingers the
starch dries
overnight locking in the
shape to make
the paintbrush handle a
worker and
search Burch towels in a
pegboard then
mounts the board upside
down on a
dipping machine this
machine submerges
the dowels in black lacquer
paint
[Music]
after one day of drying
time there's the
second two-part way this
time and silver
paint
the machine has markings to
indicate how
deep to dip the dowels for
each color
[Music]
after another day of drying
time there's
a third to this time partly
in black
paint this creates a black
handle with a
silver stripe
once the last coat of black
paint dries
the worker uses a pad
printer to stamp
lettering on the handle
with quick-dry
silver ink
a worker glues the brush
head onto the
handle then the worker sets
the brush
aside for a couple of hours
until the
glue partially dries to a
tacky state
because the next step
crimping would crack the
fully dried
heart and flew the worker
inserts the
ferrule into a crimping
machine which
has been loaded with the
dye that's the
correct diameter for this
brush handle
the machine crimps the
ferrule tightly
to the handle attaching it
permanently
once that glue hardens then
a brush is
finally ready from this
point onward
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