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Posted by stryped on April 22, 2008, 9:07 am
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wrote:
> In article
>
> > What size rod would you use for joining 1/4 inch thick 4x4 tubing
> > together? 1/8? WOuld a straight motion cover both sides?
>
> 1/8 is what I stock most of and mostly run, so for a low-volume project
> I'd probably use that. I'd have to spend more time practicing with
> larger rod to get myself dialed in on not making more of a mess with it.
>
> The way that stringers are done, it's not a matter of filling the vee in
> one pass. You weld a root pass, clean the slag, run a stringer, clean
> the slag, etc. Each stringer gets full penetration into the parent metal
> and a previous stringer bead (or into two previous stringer beads),
> until all is full.
>
> Miller suggests that weaving is OK up to 2-1/2 times electrode diameter,
> but the recall I have from class is that it is not allowed in some
> structural codes.
>
> http://www.millerwelds.com/education/articles/articles16.html
>
> --
> Cats, coffee, chocolate...vices to live by
So you are saying weld a bead in the center of a joint, clean the
slag, then weld another bead on each side of the origional bead?
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Posted by Ecnerwal on April 22, 2008, 9:13 am
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In article
> So you are saying weld a bead in the center of a joint, clean the
> slag, then weld another bead on each side of the origional bead?
Yes. Starting with a Vee preparation on the joint.
--
Cats, coffee, chocolate...vices to live by
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Posted by stryped on April 22, 2008, 10:07 am
Please log in for more thread options wrote:
> In article
>
> > So you are saying weld a bead in the center of a joint, clean the
> > slag, then weld another bead on each side of the origional bead?
>
> Yes. Starting with a Vee preparation on the joint.
>
> --
> Cats, coffee, chocolate...vices to live by
How wide a joint does this usually have to be to do this?
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Posted by Jim Wilkins on April 22, 2008, 1:48 pm
Please log in for more thread options > wrote:
>
> > In article
>
> > > So you are saying weld a bead in the center of a joint, clean the
> > > slag, then weld another bead on each side of the origional bead?
>
> > Yes. Starting with a Vee preparation on the joint.
>
> > --
> > Cats, coffee, chocolate...vices to live by
>
> How wide a joint does this usually have to be to do this?
Cut off two 1" - 2" slices of your square tubing and weld them back
together. Don't let them get too hot or they will weld differently
than longer pieces. Then saw through the welds crosswise and examine
them.
I was taught by both a bridge and a pipe weldor to fill up the vee
with stringer passes on alternate sides and run a cosmetic bead over
them. They were both careful to brush or grind out ALL the slag
between passes. The welds certainly looked good when they did them,
not quite so nice for me. I think different people learn how to make
the various techniques work and then stay with them.
Jim Wilkins
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