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Broco PC/A-5V2HR - Operating Techniques; Piercing

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g.
H
o
l
d the
r
od t
i
p
i
n the
m
o
l
ten pudd
l
e
w
h
i
c
h fo
r
m
s
(
app
r
o
x
i
m
ate
l
y
4
-
5
s
e
c
ond
s
)
.
S
pa
r
k
li
ng
i
nd
i
c
ate
s
r
od
i
gn
i
t
i
on.
h.
K
eep
i
ng the o
xy
gen
c
ont
r
o
l
l
e
v
e
r
dep
r
e
ss
ed, fu
ll
y
open the p
l
ug
v
a
l
v
e.
R
a
i
s
e the
c
utt
i
ng
r
od to the
w
o
r
k
p
i
e
c
e/ta
r
get
m
ate
ri
a
l
and
c
o
mm
en
c
e
c
utt
i
ng.
3
-
4.
O
PE
RA
T
I
N
G
T
E
CHN
I
Q
U
ES
.
N
eve
r
le
t
t
h
e c
u
tt
i
ng
r
od
bu
r
n
do
w
n
i
n
t
o
t
h
e
t
o
r
c
h
.
A
l
w
ays
r
elease
t
h
e
t
o
r
c
h
o
xy
g
e
n
c
on
t
r
o
l leve
r
t
o
ex
t
i
ngu
is
h
t
h
e
t
o
r
c
h
w
h
ile
t
h
e
r
e is a
t
leas
t
t
w
o
i
n
c
h
es
o
f
r
od
r
e
m
ai
n
i
ng
.
3
-
4
-
1.
P
ie
r
ci
ng
.
A
p
i
e
r
c
e
i
s
a
cc
o
m
p
li
s
hed b
y
ho
l
d
i
ng the to
r
c
h
w
i
th the
r
od at a 90 deg
r
ee ang
l
e
(
pe
r
pend
i
c
u
l
a
r)
to the p
i
e
r
c
e po
i
nt.
T
he bu
r
n
i
ng
r
od
i
s
s
l
o
w
l
y
pu
s
hed
i
nto the po
i
nt and a
s
w
irli
ng
m
ot
i
on
i
s
app
li
ed to
w
i
den the ho
l
e.
T
he pu
s
h
i
ng and
s
w
irli
ng
m
ot
i
on
s
a
r
e
c
ont
i
nued unt
il
the
p
r
ope
r
depth o
r
bu
r
n
-
th
r
ough
i
s
a
c
h
i
e
v
ed.
C
o
m
p
l
y
w
i
th the fo
ll
o
w
i
ng
s
tep
s
.
A
l
w
ays
w
ea
r
a
d
e
qu
a
t
e
p
r
o
t
ec
t
ive cl
o
t
h
i
ng
a
nd
f
u
ll
f
ace s
h
iel
d
.
A
l
w
ays
u
se
t
h
e lea
t
h
e
r
s
h
iel
d
du
r
i
ng
p
ie
r
ci
ng
op
e
r
a
t
i
on
s.
B
l
o
w
b
ack is
g
r
ea
t
e
r
w
h
e
n
p
ie
r
ci
ng
.
E
xe
r
cise ex
t
r
e
m
e ca
u
t
i
on
.
N
eve
r
t
ou
c
h
a
u
se
d
r
od
,
t
h
e
t
a
r
g
e
t
m
a
t
e
r
ial,
o
r
t
h
e
w
o
r
k s
u
r
f
ace
w
i
t
h
a
b
a
r
e
h
a
nd
un
t
il i
t
h
as c
oo
le
d
.
A
l
w
ays
w
ea
r
w
el
d
i
ng
g
l
o
ves.
a.
W
i
th the o
xy
gen
c
ont
r
o
l
l
e
v
e
r
s
li
ght
l
y
dep
r
e
ss
ed
(li
ght f
l
o
w
of o
xy
gen
)
, p
r
e
ss
the bu
r
n
i
ng t
i
p of the
r
od aga
i
n
s
t the ta
r
get
m
ate
ri
a
l
at a 90 deg
r
ee ang
l
e, a
ll
o
w
i
ng
i
t to
m
e
l
t a 1/4
i
n
c
h deep ho
l
e.
b. In
s
e
r
t the
r
od t
i
p
i
nto the dep
r
e
ss
i
on.
c
.
K
eep
i
ng the t
i
p of the
r
od
i
n the ho
l
e,
i
n
c
r
ea
s
e the o
xy
gen f
l
o
w
to
i
n
c
r
ea
s
e penet
r
at
i
on b
y
s
l
o
w
l
y
dep
r
e
ss
i
ng the o
xy
gen
c
ont
r
o
l
l
e
v
e
r
.
d.
A
s
the ta
r
get
m
ate
ri
a
l
m
e
l
t
s
and f
l
o
w
s
ba
ck
out of the ho
l
e,
m
o
v
e the
r
od
i
n and out and a
r
ound to
en
l
a
r
ge the ho
l
e and to a
ll
o
w
the o
xy
gen p
r
e
ss
u
r
e to
w
a
s
h a
w
a
y
m
o
l
ten
m
ate
ri
a
l
.
C
ont
i
nue to pu
s
h
the
r
od
i
nto the ho
l
e, app
l
y
i
ng
l
o
w
to
m
ode
r
ate fo
r
c
e fo
r
about t
w
o
s
e
c
ond
s
, then pu
ll
ba
ck
.
R
epeat
th
i
s
p
r
o
c
e
ss
unt
il
ta
r
get
m
ate
ri
a
l
i
s
p
i
e
r
c
ed.
P
R
ESS
T
O
P
I
E
RC
E
.

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