as mark on today's rd corner we're going to teach you how to make well show your
real world application by preparedness door skin here we're going to do is show
you the performance and value of these units and how they can pay for
themselves in the first job
let's get started
all right before we get into repair in that door teach you how to make well
real quick first thing comfortable position second is holding your torch
I'm right-handed or left-handed to be the opposite hear what you want to do is
get your left hand almost like you're holding a pool cue
this thing is going to steady your gun it's going to keep that correct work
distance from your piece that steady hand they'll keep it a nice steady
movement here the other thing your ground clamp what you want to do is try
and get that as close as possible to the weld area you're doing the floor
you don't want this thing in the trunk area and then you're welding up under
the foot well let's go ahead and get started
do some welds
yeah
all right what we're going to be doing now is well known some sheet metal
we got some 20 gauge here machines set up a very easy
inside the door here we have your chart come across the top tier material you'll
see 20 gauge the setting is voltage on e wire speed on for now what I like doing
on the sheet metal is just running a little bit hotter
I'll just take it up another notch on the voltage they're very easy going to
use three types of welds on sheet metal that's it we're going to use a spot
stitch weld plug well that'll take care of quarters floors whatever you're
running into on the thin metals
so let's show you these welds all right the first thing you want to do
cut the wire so you got about a quarter inch stick out
now we're going to get in position like we talked about before your free hand is
your steady rest get the torch down there and what we're going to do is a
spot well it's just going to be a one second blast
this is what you want to see a nice spot weld on about fifty percent each of the
panels and a real nice shallow crown there this will require almost zero
blending they're just a couple hits with a flap discs
you're good to go now what we're going to do is take that spot well take me we
just learned turn into a stitch well basically stitch welding is taking a
series of spot welds putting about fifty percent overlap together this is what
you use for your patch panel your quarters
let's show you this technique
yeah
ok
what you see is our initial spot and then our stitch welding which is
essentially a series of spot welds about fifty percent overlap right here
nice low-crown make that well very easy to blend
we talked about the spot in the stitch well find the one you're going to use
for the sheet metal is plug welding what we have here is a piece of metal
we got some three sixteen holes that we drilled or punched into what this is
going to be used for his applications trunk floors rockers inner fenders
what it allows you to do is take two pieces of metal together join them
we're going to weld right through that hole there let's go ahead and show you
this technique
all right since we went through our whole they're essentially our plug weld
what we did was we assured proper penetration
we also have consistent spot welds very low crown easy to grind all right now
what we're going to do show you some heavier stuff we got some 316 play here
just some cold rolled steel what we're going to do is put these the other and T
well and also a lap well we're going to do is show you the gun movement here
that all short proper penetration a typical government will be a standard
push in a straight line here but to assure proper penetration is having
material
we're going to do this it's exaggerated we're going to do about a fifty percent
overlap dragon that puddle the wire back throw
all right now what we just did there
that was what we talked about earlier just a straight gun movement reason I
don't like using this one on the heavier materials you can see we're not assured
of any undercut in here and proper penetration
we're back here when we did the circular motion that we learn this you're
carrying that whole puddle in there making sure you got proper penetration
between both your vertical and horizontal piece
all right this is our lap world as you can see again
circular motion that we've been using fisher's you got about fifty percent
penetration in your top piece and in your bottom piece for a structural world
so we showed you some of the common beads that you're going to need for the
sheet metal also for the heavier plate now we're going to do is show you some
of the common mistakes and how to correct them
let's move on to that
when you experience this
no penetration almost a raised crater that's too low of a gas setting or no
gas flow at all
check your tank pressure in your regulator setting
all right what you see here is the improper regulator setting we have
almost zero penetration and this raised crater in here went ahead just the
regulator to the settings in the manual and we have a very nice spot welds what
this is typical to high voltage setting you can see the very large bead that's
here obviously blow through right there and this one you can see it's starting
to come through on this corner here so what you want to do is back down your
voltage again
reference the chart that's inside of our make welders set the machine back up
again for the 20 gauge and run three more spots
all right again
as you can see is that one's way too high of a heat setting again the blow
through sink right over here so we went back set up the machine as per the chart
inside of the welder door
that's a very nice consistent spot welds
this is typical too high of a wire speed
you see your be very proud and domed up on each of these actually is piece of
wire right there
so you want to go back to your setup chart inside the welder door and again
adjust for your material thickness
so let's go ahead and do that so now we went back set up the machine as for the
reference chart and you can see that we have very consistent low-crown spots
here
all right we're showing you techniques you're going to need to know from a well
near automotive sheet metal some of your heavier plate now we're back to our door
here
we've cut out the corroded area there we have some of our rust encapsulator
treating some of the rust behind it and we've taken a patch simple form this
will show you a little bit more of it as we get into this but basically cut it to
shape a 90 degree Bend on here and to give a little crown to the panel
since the door skin is not flat that's just simply done on a leg on the bench
with the patch one here you're going to get into a what's called a butt weld in
here where the two pieces are lined up that's where you go ahead and do your
spots and turn that into your series which is your stitch welding all across
but i want to show you a tip one here to make it a little bit easier
so if the panel's don't line up exact we saw the sheet metal kit that gives you
these doubler strips so 1-inch pieces of aluminized steel we're gonna just drill
a series of holes here which goes back to doing our plug weld and that we
learned there
these will go behind your open area there
and up here once we weld these in place
what that will do now is that will give your patch
another area to get there just in case it isn't cut correctly you need to shift
something as you're going on there and i will come across stitch well that entire
seam
let's go ahead and get started on it
yeah
all right as you can see we finished the repair here and what we've done is we've
shown you how easy it is to make well show you a couple little tips on there
but want to talk about is to performance in the value of these units
what you're getting is a unit that's equivalent to the professionals that are
out there about a third to half the price the value of this is going to pay
for itself on the first job
this door it's about 300 bucks about the cost of that unit on there
everything here forward is going to pay you back on this unit
so by the East would make 135 today start doing your own metal fab and
welding saving money
ok