- Welcome to Weld.com.
I'm Bob Moffitt.
Appreciate your support over the years,
your comments and your feedback.
We've been having multiple requests for the Monster Coupon
and I believe Mancub had asked me a while back to teach him
how to do a little back feed
which is what I like to do on Monster Coupons.
Want to tack this up want to use the AHP the new Alpha TG201XD.
Run the root pass on this,
I'll run one side
and I'll teach him this back feed method.
I think he likes the lay wire,
I'm not trying to get him off of that.
So we can do a little back feed
get some reinforcement in here.
Let's get some gear on,
we'll go right to it.
I'm get ready to tack up,
I'm probably going to do this
a little different than most guys do it.
Most people do it.
I'm going to put three tacks in here.
The first one is going to be at 12 o'clock.
(upbeat music)
Just from you got like a fit tack,
It'll be less than a quarter of an inch long.
The other two tacks I want to put in here
at two o'clock
and 10 o'clock.
And the reason I like to do that
is because they're up above center.
It leaves the entire bottom open.
I can rest my wire against one of the tacks
when I'm coming off a bottom fit from the inside.
Also I can tie into those.
Most of the time without ground running them out
and feathering them.
I can just keep wrought ongoing.
Consume it.
Keep wrought on going come up to the top,
I'm going to give it a go that way.
Personally I like to rest my wire against my tack.
Put my thumb against the bottom of the coupon over here.
Hit the foot pedal inadvertently.
Walk this in here off the bottom.
Get some reinforcement,
until I get up at such a point
where I can wiggle a cup the rest of the way.
Working up on the tack,
I heat the whole thing up.
Add some wire
and I'll just consume that.
When the leading edge dips a little bit,
let us keep wrought on going.
And we have a root pass.
Man cub you want to do a little back feed
here on monster coupon?
- Yeah.
- Okay.
Mancub wants to learn a little back feed technique here
instead of the flat wire he's used too,
so want to take him out of his element.
Do the other side.
We've got 530 second gap maintained
by those tacks that we put in earlier.
Come off this bottom side get it wet.
Put your wrought on the leading edge.
Start building that profile and you're good to go.
- All right.
- When you come up to this tack.
When you're just short of it,
use your arc to heat that tack up.
Back up.
Dab some wire and come on through it.
- All right.
- Wrought on the leading edge of that tack,
heats up and sags you just,
add wire and keep wrought on going.
And that way you're not grinding tacks,
you're using the arc to blend and keep right on going.
Your profile should be consistent all the way.
- I like that not using a grinder heck yeah.
- Just another method Man that's way I've been doing that.
I've had good success with it and I don't grind a lot.
I'm fat and old and lazy and I don't like to grind.
Don't.
Start welding.
Don't comment on that.
Carry on.
- So I start about a quarter inch back
or three sixteenths back?
- From three sixteenths back on that leading edge
just get it good and wet first
and then put the wire on the leading edge
you'll see it.
- Put wire on leading edge.
Heat it up.
There you go
- Then you take off.
- You're going to blend in.
- Relax.
- May I readjust?
- Okay.
Need to readjust, readjust.
- All right.
- Except you came out of that awfully quick.
You got that piping porosity so make sure you back up.
Actually we should grind that,
but back up, consume that and now keep going.
- All right.
- There you go.
Coming up on the tide.
Keep the whole thing up.
Add wire.
So that you get good result keep the wire in there.
Keep everything up.
That's one
and weld through it.
Kind of the same way I started out on the root.
I will take,
I'll take and put my thumb against this lightly.
Just to come off the bottom.
Until I can rest the cup up here
and then I'll walk it,
wash the rest the way.
I want to spend time on the edge
I want to spend time in the bevel phase more time up here.
Wire is going to follow the arc,
but I don't want to reshape this root
I don't want to heat it up to the point
where I'm sucking it back.
So.
- What's the point you spend up on top?
So you have a good tie in or something
- Wire is going to follow the arc.
- All right.
- I spend more time up here
and I come down in the profile
you're laying there correctly.
If I spend more time on the bottom
and adding wire then my profile going to be more to the bottom.
I want it to lay in there flat.
I'm pre-planning my well.
- I can see you're doing a little slight pause your top.
- I'm not trying to fill this up.
I'm just trying throw some beef in here.
- Got you.
So that when we go to the fill passes.
- Yeah.
- We're not taking a chance to blow anything up.
- Gotch you.
- We come out of this slow,
Prowl up on the wall,
pop out of it so they don't
lay piping porosity on leading edge.
It's not perfect Perfect.
But again I'm pretty sure
we've got a few passes to put in here.
- Yeah.
- I'm wanting to fill this a little bit.
Get enough beef in there.
I didn't I'm sure we can check that
didn't look like I was hot enough to rearrange the root.
Spend 2/3 of your time up here on the top.
Let it wash down here.
Make sure you totally weld,
blend it into the bevels
and keep wrought on going.
- Sweet.
- Changed it over to a number 10 cups,
so you'd have a little more room to work in.
I mean you can freehand it in there too.
So.
(arc welding hisses)
Whenever it's comfortable for you.
- I'm want to try do the wiggle some stuff.
- Walk it off the bottom.
Heat it up.
Keep the wire on top.
There you go.
This concludes our root pass
and fill pass or half pass whatever you want to call it
on a monster Coupon run.
So again we put
We did a little bit different technique.
We put tacks at 12 o'clock, 10 o'clock, two o'clock.
We can back feed
coming off the bottom kept the profile going.
We didn't even grind the tacks
because we used the arc and technique
to wash through this
came up here to top,
closed it up.
Came back and put our fill pass in with
technique of keeping the wire more to the top side.
Learn anything.
- Yeah a lot.
- Little technique.
You can create your own suck back
if you pull the wire too soon.
You can create too much up here of a cold wire
and it's not much of a subtle technique change
you go through it and get comfortable with it.
Forget foot pedal just draw around them all the time
set your amperage at 120 whatever you like.
- All right.
- Keep going.
So I hope you found this educational
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shout out.
- Thank you Bob.
- Thanks for watching Weld.Com.