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From YouTube: Welder - How to use it?
Description
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A
This
is
the
MIG
welder
stands
for
a
metal
inert
gas,
it's
a
welder
that
runs
a
wire
through
welding
wire.
That's
where
the
metal
inert
gas
comes
in,
there's
a
shielding
gas
that
makes
for
a
clean
weld.
Why
do
we
weld
well?
Welding
is
perhaps
the
most
important
function
around
the
shop
in
a
sense
that
you
can
put
together
any
shape
metal.
You
can
cut
things
with
your
your
torch.
You
can
cut
things,
prepare
things
on
your
iron
worker
or
other
cutting
methods
that
I've
described
already
now,
the
in
principle.
A
You
can
take
any
shapes,
put
them
together
in
any
way
you
want,
so
you
can
get
quite
complicated
and
advanced
shapes
using
a
welder
by
putting
any
kind
of
metal
together.
What
happens
is
the
high
current
of
electricity
flows
through
the
wire?
We
have
these
primarily
the
millermatic
200
200
amps
of
current
that
flows
through
a
tiny
wire
when
you
weld
that
melts
the
metal
and
fuses
it
together.
How
do
you
do
that?
What
are
the
main
controls
here?
A
So,
first
of
all,
you
turn
the
machine
on
two
main
settings
are
power
and
speed
of
wire
speed
of
the
wire
is
how
how
far
sorry
how
fast
the
wire
comes
out
and
that
determines
how
much
metal
deposition
you
are
getting
the
slower
the
metal
is.
The
the
wire
is
the
more
energy
or
transferring
while
not
putting
down
a
lot
of
metal,
so
you
can
actually
heat
the
metal
and
get
a
deeper
penetration.
First
of
all,
you
turn
the
machine
on
now.
There's
high
and
low
side
on
the
welder.
This
is
low
side.
A
It
says
10
to
20
volts,
high
side
20
to
30.
We
never
really
use
the
low
side
here,
but
on
the
high
side
we
go
from
one
to
six
setting
from
one
to
six
four
six.
You
can
easily
weld
half
inch
metal
or
even
one
inch
metal
on
one.
You
might
want
to
do
one
eighth
inch
or
very
thin
metal,
and
you
can
unload
side
if
you
actually
have
very
thin
sheet
metal
are
up
to
welding
blades
like
bandsaw.
You
can
do
that
on
a
low
side.
The
wire
speed
goes
from
zero
to
90.
A
Typically,
we
run
somewhere
between
50
and
80
on
the
settings
and
that
for
that
you
have
to
get
a
feeling
for
it.
A
couple
of
things
about
the
nozzle
itself:
here's
a
shielding
gas
shielding
nozzle,
basically,
there's
a
gas
diffuser
that
takes
that
pretty
much
shoots
the
gas
into
the
nozzle.
So
this
is
the
shielding
gas.
That's
the
whole
word
that
comes
out
the
gas
comes
out
of,
and
this
is
a
an
insulator
piece
that
you
screw
on,
and
your
nozzle.
A
What
you
want
to
do.
You
can
put
the
nozzle
up
and
down
as
you
like,
but
you
want
to
keep
it
such
that
the
tip
the
welding
tip,
which
is
this,
is
also
unscrews.
This
is
replaceable
this
wears
out
after
some
time.
The
wire
goes
through
it.
The
electrical
contact
between
the
wire
and
the
whole
electrical
system
happens
through
the
tip
right
here,
so
the
heat
starts
happening
actually
right
here
as
you're
pushing
it
out.
A
The
heat
comes
out,
so
first
of
all,
the
gas
is
shielding
the
the
metal
as
you're
welding
so
that
you
don't
get
oxidation
and
you
get
a
clean
weld.
What
you'll
see
is
a
buildup
of
spatter
around
the
nozzle
to
ameliorate
that
every
soft
that
you
have
to
take
a
pair
of
pliers
and
clean
it
out
for
safety.
First
of
all,
where
your
welding
helmet,
we
have
self
darkening
helmets
which
are
activated
upon
the
the
fire
the
arc
happening.
The
Ark
is
an
intense
UV
source.
A
It
will
also
burn
your
skin,
so
you
want
to
have
long,
sleeved
shirt,
there's
spatter!
That
comes
off,
so
you
want
to
have
gloves
too
for
handling
hot
metal.
The
main
thing
some
people
may
not
realize,
while
you're
welding
you're
not
going
to
feel
but
just
like
being
on
a
beach
except
you
can
get
a
burn
within
minutes,
because
the
light
is
so
intense
coming
out
of
the
the
welder,
the
welding
flame.
One
thing
to
mention
also
to
complete
a
welding
circuit.
A
That
forms
on
the
on
the
wire
is
trapped
here
and
it
does
not
go
inside
because
what
you'll
see
is
you
can
get
the
the
liner
inside
clogged
and
you
will
no
longer
be
able
to
feed
with
the
wire
feed
mechanism,
released,
straighten
out
the
hose
and
see
what
happens
when
you
pull
on
pull
on
the
wire.
It
should
be
relatively
easy
to
pull
out
yet
it's
just
as
I
can
pull
it
right
out,
not
much
force
it
pulls
on
the
wire.
So
this
is
good.
Liner
is
good.