/r/Welding

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/r/Welding

466,382 Subscribers

4

Silly question about the strength of TIG wire

Hello! I am so sorry this is the layperson-best layperson-est thing that could possibly ever asked on this subreddit but also this is possibly the only subreddit that would know.

I do 3D printing designs and prefer to strengthen my prints with things other than plastic through clever design. Now I love to use stainless steel rods at the 1.5-2.5mm for strength in these designs but they are fairly expensive to buy in the quantities I need for bigger projects. They are also kinda sold at short sizes so I loose a lot just cutting them.

I was tipped off about TIG wire as a way to sidestep this and when I got a 2LBS container of aluminum TIG wire in my mailbox today I was so jazzed.

Anywho its also not strong enough. And I would prefer to have the smallest amount of shipping going on for this research so I am trying to get a sense of the strength of Mild Steel and Stainless Steel TIG wire. Aluminum is not going to work in most designs as it is soft and bendy - should've seen that coming.

I don't have anywhere I know that really sells TIG wire near me. So I gotta ship it to hold it. I realize it's not going to be 1:1 but is stainless steel TIG wire about the same rigidity as a similar diameter of just a rod? And how much more disappointed am I going to be using mild steel?

Brittleness doesnt really matter here as it will be shielded. It's its residence to bending under torque and under a centrally placed load I am usually looking for.

Again. Forgive me for this silly question. But I may not have a way to hold them in my hands without ordering so I would love to get a rough sense.

13 Comments
2025/02/02
00:24 UTC

10

New to welding and need advice to get started.

Hi I am new to welding, however as you can see the regulator does not fit the cylinder. Is there an adapter I can use or do I need to get a different regulator or cylinder that is compatible? Thank you in advance! By the way if it matters, it is a Hobart Handler 140.

23 Comments
2025/02/01
23:19 UTC

2

Boilermaker Union

Hi! My husband (24M) has been welding for a few years now and he joined our local Boilermaker union roughly a year ago. We are located in NW Indiana so he’s usually not too busy during the summer and winter months.

Unfortunately due to the winter months being the slow season, we’re struggling to afford rent this month. He’s been approved for travel work but nothing has worked out in his favor yet.

I was wondering if any of you might have any suggestions as to what kind of jobs he might be able to get during his slow seasons that would work around his very random schedule for the union. I appreciate any help you might have!

2 Comments
2025/02/01
23:15 UTC

0

Best welder for a 13 year old?

I'm looking to purchase a welder for my 13 year old to learn on and make garden sculptures / industrial art. What's the best machine to buy and what else does he need to get started?

4 Comments
2025/02/01
21:44 UTC

45

Is it possible to have this welded and be as strong as factory?

It broke under normal driving along the weld am i better off finding a new front case half that isnt cracked?

32 Comments
2025/02/01
21:15 UTC

1

any advice on 3G and 2G FCAW Tests?

did practice tests and it’s coming along okay but my root isn’t filling the ceramic and much as i’d like.. any advice or tips would be greatly appreciated!

0 Comments
2025/02/01
19:59 UTC

7

Best way to remove mill scale

What is the best way to get mill scale off steel plate? I tried flap disks, scotchbrite patch, grinding discs. It all does the trick but takes some effort. I have read about acid working pretty well. What would be the least time consuming way to get to the shiny steel without buying a fancy laser machine?

50 Comments
2025/02/01
18:51 UTC

7

What brand of hood is this cheapo?

There are no markings on it that indicate

7 Comments
2025/02/01
17:37 UTC

430

My wages in the area💩💩

3yrs of exp to make $18-23 🤬🤬.

255 Comments
2025/02/01
13:47 UTC

8

FCAW vs SMAW

I’m working on the design of a structural member where previously, the client has preferred not to utilize FCAW and had wanted SMAW only. A prospective contractor insists to go with FCAW and that they’ve had previous experience with this client in getting FCAW approved.

Im not a welding expert so my understanding between the two is rudimentary, but I am aware of the key differences. My question is what would be some reasons that FCAW would not be used on a structural member?

Edit: would ask the client but it’s the weekend and they won’t pick up the phone

18 Comments
2025/02/01
13:37 UTC

2

How strong is this weld at the rear bar? Need to mount 50kg of Jerry can fuel but caravaners are saying it can only legally hold 30kg.. the steel is 2mm 50 x 100mm RHS. I can jump on it no problem

4 Comments
2025/02/01
11:07 UTC

925

I saw this at a restaurant. Why is that little bar across the two I beams?

214 Comments
2025/02/01
04:27 UTC

1

6011 rod instead of 6010 for open root pipe practice?

Title basically. Have an inverter so 6010 is a no go. Looking to practice some pipe coupons and wondering if 6011 will give the same feel as a 6010 rod would regarding an open root pass. Thanks.

4 Comments
2025/02/01
01:00 UTC

3

Maybe im being dumb but i am teaching myself to weld, (no classes near me) and i cant find scrap metal to practice on. Any ideas?

23 Comments
2025/02/01
00:52 UTC

1

Garage mig welder recommendation

I’m hoping to get some advice on purchasing my first mig welder. It would be for light duty use in automotive applications. Thinking it needs to handle max 1/4 plate for fabricating bumpers and frame repairs. Planning to go flux core wire instead of gas to start.

Here’s the catch. I have zero experience. Im willing to spend the time to practice and learn along the way. I’m mechanically inclined and can always figure it out.

I’m thinking of either a Lincoln pro mig 140 or a Hobart 140. I’ve seen lesser know brands advertised on social media and Amazon for less $ but the documentation that I could find on those products was limited to non-existant.

Any opinions?

9 Comments
2025/02/01
00:11 UTC

14

I'm packing it in at this point because I don't know what else to do and I'm out of money.

Went out to do a well test. The company that I want to do the well test for did not have a properly set up rod oven for there electrodes. They were just sitting open in the can on the shop floor. Definitely wet. Shop was maybe 35°. I usually love 7018 but on top of forgetting the actual technique this rod ran awfully. It also was a newer welder that I had never seen before that had me digging through a ton of menus to try to find settings. Ironically they also had me run the mig test the same day on some machine that was pushing 40.

As I've already said failed to test and everything sucked. They did give me the option of coming in for a retest but it's a 4-Hour drive.

Second weld test. Went out to a shop that does containment vessels. Relevant standard was asme section 9 which meant that I needed to produce an x-ray quality weld. Pulled up the tables, got my machine dialed in. My first few layers and my root pass were beautiful. Filled it all the way out and got to the cap. I don't know what happened but on both my 2G and 3G, I absolutely screwed it. No porosity no undercut but the weld finish on both of them was awful.

No offer of a retest but I assume I potentially could get in for one.

At this point I'm out of money and haven't welded, excluding those tests, in nearly 2 months. I hadn't touched stick in a year before I did that test for the first company and I hadn't touched the flux core in a year before I did the weld test for the second company. I don't have an area to set up some shitty Little harbor freight welder and start practicing again. But if you're in Pennsylvania and you have some company that's willing to train on the job I'm all ears.

12 Comments
2025/01/31
23:59 UTC

1

CWI and getting off the road

Anyone on here ever get there CWI and settle down from the road life? If so care to share a little about the transition, like finding your first job after finishing the course.

5 Comments
2025/01/31
23:57 UTC

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