We're going to do a series of pipe welding videos on
four inch, schedule 40. This particular one is
going to be like that intro, get you started type thing. We're going to kind of roll this out. We're using a smaller V-block
over here on the table. So we could go to a little
bit more than quarters. I know that on the
small bore two inch pipe we did it in quarters. This one we can actually
reach a little bit lower, but again, this was to build
confidence and get you started. My fit is going to be a loose 332. I'm going to use a number five cup and we're going to put roots in today. (metal clanging) Let's get some gear on and get going. (metal grinding) (crackling) I'm going to heat the
leading edge of this root up. I'm trying to keep the
wire on the leading edge and down low in the groove. My personal preference here is to rest the cup gently
in this groove here. I have a number five cup and I like to just do the wiggle thing when I'm doing this in quarters. That way I can come up here on top. I intend on blending
into this tack up here, heating it up and pushing some wire in it and fusing it all together. So I might be slightly over the top when I get there and that's fine. Again, this is to build confidence, being right here in a position, where you're not in a weird, you know, you're not uncomfortable. So, you could hold the torch different. Since I said I was
walking the cup in there, I could do this by resting the heal of my hand
in here and free handing it. Flexing that torch. If I was to maybe get right in there. Then when I come up to a tack, I kind of like to heat everything up. Then dab some wire in there, wash back across and
blend it all together. Okay, I can tell where I
came off of the leading edge and I melted that. There's always a little bump in there, but then the rest of it
shows the edges broken down and some reinforcement. So we're fine. That is our goal. You want a little reinforcement, want to to make sure
that we're melting edges. It's not so much about forcing it in there and blowing a big keyhole
and all that kind of stuff. You just kind of... That technique is, we're breaking down the
edges of the pipe bevel. We're keeping the wire in there
so that we can control it. That will build your confidence when you're starting to
weld these and learning how. Another method, as I mentioned before, you know you could rest
the heal of your hand against the pipe and freehand this in here. I'm going to try and demonstrate that. While I'm doing it, this
is going to be more of a, work the tungsten back a little bit, small keyhole, dab the wire
in there, and keep going. We'll see what happens. (crackling) I'm going to heat the leading
edge of my root up here. (crackling) Kind of do the little keyhole dab thing. Dab. Dab. Dab. (crackling) I feel like I'm shaking like a puppy pooping peach seeds here. Again, this is not my preferred method, but some of you may be
real comfortable with it. Well, that looks okay, but
not my preferred method, but it came out just fine. I've done this before. Sometimes you're forced
to do that by position and availability to your weld. Again, my preferred method
is to rest the cup in there and just take a walk. You know this one, kind
of keyholing and dabbing and resting my pipe on my hand, or resting the heal of
my hand on the pipe. So, you know, again there's
multiple ways to do this, but this'll get you started. You can relax. Do these in quarters, get confident, see your results right away. We're going to be doing more
roots in multiple positions. We're also going to be filling and capping these welds. Four inch schedule 40. Appreciate you watching
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