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Having the ability to do both, and do them both to quality standards is a must for a good all around welder.

On a vertical, run a weave. On anything else, run stringers. This is how it was origionally intended years ago, and still holds true now. No need to stringer a vertical unless you want to gring more than you weld. Simple as that. Anyone who says different has never used a weave on a test. I’ve never ran a stringer on a vertical, and have passed dozens, literally.

Running stringers has shown a higher level of passing a bend test. It doesn't mean it can't be done, signed a CWI and 20+ year union ironworker.

in my experience stringers penetrate better, weaves give a better appearance and coverage ...less passes .. but.. your milage may vary 😁👍🤣

The information and data I have seen that shows stringers are superior to weaves has to do with grain structure. When you weave you put way more heat into the weld which causes poorer grain structure. On charpy v notch and tensile strength tests there would be a predicted lowering of results using a weave vs stringers. How much of a lowering and if it’s enough to bust for rod spec is up for debate (and would require specific testing). However this is likely the reason so many high liability welds specify stringers only. Excessive heat input is never a good thing, and my understanding was the AWS deals with the weave vs stringer debate primarily with heat input limits. I am not a welding inspector nor a metallurgist but all of the evidence I have seen points to stringers being stronger due to grain structure. I know when I have cut and etched my own welds I have noticed a difference in grain structure with my own eyes between weaves/stringers, which tells me there has to be some validity to it. Anyway, great video 👍

Stringers vs Weave...its a preference. Period. The A.W.S dosen't say one is or has to be done when taking the D1.1 or any other code. They are both welding techniques.And need to be applied where/when necessary.

I heard that Stringer beads are preferred over weave simply because of the heat input that causes fatigue to the steel and can fail overtime

I just passed an X-Ray test like this, on 1" thick plate , at 12" long , 1/8" 7018 Low-Hy. Rods , closed root, carbon arc back gouged on opposite side, fill pass,then capped. Fabrication for Oil Refineries and Power Plants. I did NOT weave on root pass, Slight manipulation for hot pass, weaved on most the fill passes, stringer beads on opposite sides of the plate for both caps. All preference and based upon W.P.S. at the end of the day

It isn't just all about the physical appearance but the strength also and that's what makes stringer better

It's always better to " weave" any electrode as little as possible. Yes the code calls it a "split weave" technique

All of my tests never allowed weaving as a means of filling out the joint, some tests never even allowed a grinder beyond removing bridge tacks and if you reached for one they failed the test. I guess it depends on the company you are testing for.

Alot of things contribute to a good weld 1- the rods used 2- preparation on materials. Finally the welder himself must good and good

Remember, spastically with vertical you’ve got to keep on pushing pause on the walls fast in the middle . And I learned if you stretch the puddle it lays good and flat not humped in the middle.

True to many thoughs , I'v ran some stringers but my majority has been weave as well , union iron worker 20 yrs , passed all exams from NYC to booming out west and now run my own business . As long as you run tight on your ends keep a full puddle. vertical watch the shelf your good ,,, When you have full knowledge of what the rod is doing your good ..Like my favorite forman would say : what the hand crochets the mind motivates , ONCE AND DONE MOBILE WELDING , CC, FL

AWESOME WORK. Love how you melted in 4 electrodes per pass. I now know that it taks time: across... press... up a hair... press... back across... press... up a hair and press.... repeat.... Saving this video for personal improvement. Thank you for the lesson, Sir!

I weld my stringer with about 1/2 rod width of oscillation anyway. It wets the sides into the previous bead and makes it look clean. Works on uphill too. Idk but it bends

Stringers are the deep penetrating versus weaving was taught that 36 years ago if you can run stringers you are a master welder weaving is much easier than stringers expierience is in the pudding guys if you can run stringers your hired

Basically a weave is going to have more residual stress left in the weld when it cools. Stringers are more concentrated and the same amount of heat is applied over time. And it's easier to calculate the number of passes for a certain joints figuring stringers to figure out time and the amount of filler metal. Obviously stress relieving post welding helps but that's the basics. You're welcome.

Result... everything is perfect!

love this argument everytime it comes up 😁👍

I passed all my tests with weaves all because I forgot about stringers 😂

I’ve found that running stringers obviously gives more density so it helps for discontinuities(pipeline). I’d like to see a comparison between the Esab 90dh and the Bolher BVD90. The Lincoln rod I don’t know the name of but I’ve had bad luck with it.

The biggest problem with weaves is heat input. The joules. Weaves add much more heat input than stringers.

I’ve done UT’s done on my welds and when I’ve been asked to weave. I failed first, I’ve never failed a test again after going back to stringers.

Nice work Rosendo! Great technique, as I watch I still get those testing butterflies haha, 💯👍🏽

I lay stringers when I need strength, but honestly weaves can be strong enough for a lot of applications and I'll throw them down sometimes.

stringers have less heat input, less stress on the heat affect zone . and as with all welds each pass refines the grain structure of the former pass. longer grain structure will crack more readily than a smaller more refined grain structure . hence too, a cap why put metal higher than the parent metal . Refine the grain structure of the weld the width of the parent metal ? this is what I was lead to believe

Asmr has never worked for me before, holy cow good work

Everyone tries to make it all about the weld it self. The weld will be stronger than the base metal regardless. It's about your HAZ with weave vs. stringer. It's about carbon precipitation. Same reason to post heat and same reason to not quench. Your weld will be fine. It's the metal next to it that is in question. Think about what you are effecting not just what you are doing. Peace and stay safe Brothers and Sisters!!!

I’ve done both weave and stringers on my d1.1 tests. I usually run nice slow stingers for my root pass, weaves to fill that gap, then stringers or weave for my cap depending on what the CWI prefers. I personally think the weave cap looks better than a stringer cap and so does most CWIs. Don’t be afraid to switch rod sizes too. If that gap is too small for your 1/8th switch to a 3/32 rod and turn it down 10-20 amps.

I have spray arced several inch thick steel for the past 5 years at my current job. I have weaved EVERYTHING. Weaves as wide as 3 inches. I have never failed a UT. Weave is king! Stringers are cool, but you are creating more issues if you don’t put them in correctly. Any void or hump could be a highway for stress to travel. The criteria is more strict as well. Having to stagger tie-ins, back gouging every tie-in, measuring your peak to valley… just weave the damn thing.

Every job I’ve ever been on required stringers. It’s good to know how to do both though.

Just thanking about failure mods here. strikes me as a stringer might have more potential for little errors, but it will not fail catastrophically. a stringer, if it develops a crack from not really connecting with the next run for whatever reason, has the potential to fail catastrophically with a full on crack that runs the length. just a thought.

Some of you need another 20 yrs experience and testing. Both have their places.

Stringers have more weld integrity but they get old fast in the field on position welds especially in tight spots. They're time consuming and require more concentration to keep everything symmetrical. Sloppy crooked stringers are an eye sore and nothing to be proud about. Making smooth and consistent weaves is more satisfying because not everyone can master tie-ins and consistency. It's much faster to carry metal uphill than sideways.

Yes If you know how to work your heat with your travel speed and hold time from side to side .

It isn't just all about the physical appearance but also the strength

More start and stops for weave pass = more possibilities for failures from bad start and stops, or lack of fusion.

that's so weird we stringer till the end and the weave a double cap for a our bend test.

Learn them both to the best of your ability.

I would love to see something like this, but also do charpe, tensile, and a bend.

Its a pity he did not do impact testing of the weld metal, this is where the effects of heat input are seen best on mild steels, not so much bend testing. It is a bit like a cop saying you were speeding because you blew over the limit on a blood alcohol test. You are looking to achieve acicular ferrite, hopefully 50% plus by volume fraction in weld metal [in prior austenite grains as the weld cools], not course grained constituents like aligned ferrite and/or grain boundary ferrite or even fine pearlite, which is typically formed with high heat input welding, like what is found in welds suffering from excessive weaving. The property most likely to suffer is toughness through excessive amounts of the above nucleation and growth microstructures rather than bainitic type transformation products, so measure using a technique that will quantify those, not so much ductility by doing a bend test. An addition to impact testing that may also prove useful to understanding what the effects of weaving and excessive heat inputs are, would be a few comparison micrographs, to be able to compare microstructure achieved to fracture toughness. That is the real test, not so much a bend test in this situation - IMO.

It all depends on what the code or test procedures allow. Chalie B

Minutes 11.43, 2nd bending test Is it just me or the second sample bend with different speed? The angle is a little bit lower that the other sample. 1)speed is the same 2) the load is the same 3) different angle Maybe the second sample has a greater resistance to shear stress What do you think?

I was told from C.W.B inspector that he doesn't like to see more than two and a half rod diameters during a weave. It the weave gets too wide,then what your doing is running over slag and possibly getting inclusions. A big weave is no more than a build up pad.

Me encanta tu canal, ojalá halla un sub español.

I think you must be trial this with MiG weld position 2G . . 🧑‍🏭🤩

Stringers are definitely better weaves put way to much heat on A36 you probably won't notice much of a difference but on high strength and alloy steels you for sure will

It seems the conclusion is a good weave is usually good enough but stringers are stronger if you need to maximize the strength of the weld. Correct me if I'm wrong. But what about warpage? Does the weave and all its heat cause more warpage? I'm asking some of you pros out there I'm just a dauber.

Keep up your good work sir. I want to know if I can zigzag my bead when working on T-Joint horizontally on a 2.5mm plate thickness.please make a video on that for me.thank you.

Wow you sre really filling that up. Looks good. I tend to go a little faster.

Great video. Thanks

I see the weave. Basically back and forth. I was taught to use a figure 8.

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Smallest coupons I've ever seen 😂 think you'd bend more of the weld to test the actual weld lol

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Stringers man ,I've dropped bombs with weaves,I've learned my lesson, lol,stringers 100%

Not bragging on myself,but I’d love to take you on using 6” schedule 80 pipe. Not sure on my root,but I would really love to challenge you!

I completely had a different idea of what the title said

I’m sorry, I am way too distracted by the guy and his visor 🧢. Edit- is that his hair?

You should check out Jason Becker's video on this subject, where the standard tests are comparable, however when Charpy Vee's are done, Weaving is CLEARLY worse (Excessive heat input?) kzfaq.info/get/bejne/Y71heJOT3dDHdZc.html

Muy buen video, saludos des de España! Me pueden decir donde puedo comprar camisas de trabajo como las suyas? Un saludo!!

I run stringers and weave gaps and then run stringers over them.

What is the point of doing a stringer vs weave test, when you cap the weave test with stringers? Do another one weaved all the way out. I guarantee you they will both pass a bend test.

The british standards say no more than 3x the rod dia in general

What rod are we using mate

Weave all the way

Stringer & Wave welding are the same strong (proved)

How can I stop getting undercuts no my up hills

Is what's seen in the camera on these videos what you should be able to see through the mask? Don't think mine is dark enough.

When it comes to mig doing stringers is recommended, but in my job I do weaving to cover something up or I just do a 2 bead cap. Weaving makes your welds weak.

Stringers, Less heat. Weaves, Look Bitchin. But I'll still with stringers on my certs.

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What glasses does he have on? Anyone know ?

Not always stringers have there place

Not bad job, few oopsies but very nice!

What brand welding shirts do you use ?

Yo. On a bend test is fine, i'll pass but if they test it for tensile strength is lower, if the company you work for cares about heat input it's also a problem. Not that anyone cares...

Who cares as long as it shoots lol

He's pushing..i thought if slag you drag

Stringers all day scorpion tails baby

Imo. For pipe, in position, The smaller rods Burn at the same speed if the amperage is set the same so it's up to clean up buffing and grinding on which is faster. But for thick plate, in position vertical up, you can burn 3/16 7018 , only using a weave, so I guess weave wins.

Sheesh

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Isn't stringers just basically micro weaves? #weavegrang

No Binford welders??? Lol

ROOKIES :)

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One is no better than the other. Depends on person holding the stinger.

💚🤘🏿

Lumayan

Come on… long sleeves and gloves on while using a sander?

Depends on who is welding and their skill level. You can do either. Unless it's specifically says do this or that

Ok I’ll bite... Higher Heat input (but not too high) and/or a slow cooling rate = strong weld. Both stringers and weaves can be strong. Too small of stringers can result in poor grain refinement.

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It’s all about procedure not how good a welder you are.

Ceeep👎👎👎

only stringers for me, weaving brings in too much heat and can fail structural tests - as we saw on weldcom -

At time's it's good to watch others,, welding on video..one gets a better perspective of things n methods used.. even though you know what to do "Vision/Picture In Motion".. kaapai presente 🦾✌️🤙 kia ora 👍