r/Welding

That's it that's the post.

Alright I'm throwing in an edit, because so many people are telling me not to weld rebar. This is A706W Rebar, designed for welding. Customer provided materials. it's supposed to get welded with 5/16ths fillet weld, which sits right underneath and is flush with the lip. You're not supposed to tack weld rebar according AWS D.1.4. Yes, I'm not prepping materials, due to the customers needs. It still passes destructive testing, breaks at around 100,000-110,000 PSI, needs to meet 90,000 psi.

Self taught welded here. Is this TIG acceptable? My boss welds his caps at like 65amps, but I struggle going that slow and getting nice looking welds. The internet weldy boys burn their caps at 90+. I welded this cap at 105amps with 3/32 rod (all we have).

Also sometimes outside of the shielding gas, the stainless will turn gold a little. Is this an indication of it getting too hot? Is the gold color bad?

if you've ever run longer seams on 3mm stainless, you probably know the stupid part. it looks fine sitting on the bench, then you put a little too much heat into it and suddenly the whole panel wants to become a potato chip.

had a small batch of stainless enclosures and really didn’t feel like spending the rest of the day straightening, grinding, and cleaning heat tint, so i tried this one with a handheld fiber laser instead of my usual TIG setup. machine was a Denaliweld JET 2000, but i had it set around 500W instead of pushing it anywhere near full power.

biggest difference was heat control. the panels stayed flatter than i expected, and cleanup was way less annoying.

the annoying part was prep. fit-up had to be tight, basically no daylight between the pieces. clamps mattered a ton. filler wire too. i don’t think i’d try outside corners like this autogenous unless everything was sitting perfect.

i didn’t grab a backside/setup pic, so i’m not making any big claims about backing or penetration from this photo alone. just judging it as finished-side cosmetic box work, running lower power on stainless box seams felt pretty useful.

curious how other sheet metal shops are treating handheld laser for this kind of enclosure work. are you using it mostly for cosmetic seams / repetitive box jobs, or still defaulting to TIG unless the fit-up is perfect?

Had a little fun with some scrap at work this week. 🚲👨🏻‍🏭

So I've been learning to weld at work for the past several months. I've gotten really good and confident with 6010, 6011, 6013, and 7018 stick welding. 99.99% of the work related welding we do is stick, mild steel and very rarely we do some stainless. We have a small Hobart handler gas MIG in the corner that works well, but in 5 years I've only used it for about 10 minutes. I'm pretty sure I was the first one to turn it on in several years, as most of the guys thought it was broken. My trainer and our manager basically give me unlimited time and scrap materials to practice with (I've made some pretty cool shit since I started) and I want to slowly expand my skill set. Our smaller repair shop welder is capable of stick and TIG welding and I'd like to try TIG. The problem is my company has no use for it at this time so they won't provide the materials necessary, which is totally understandable.

My question for the experts out there is, how much do you estimate I'll have to come out of pocket to set this particular machine up for tig welding, and what brands and products would you recommend that will work well for a beginner and won't bankrupt me?

Thanks y'all.

Haven't been able to fine anything on it, only place I can find anything on it is the ebay auction I won it from.

Pretty creative kids. Intro to welding final, brazing a rose with 9 pieces. They are given a laser cut rose set, they then hand form each petal layer for what they want and design as they see fit and capable.

What would you use to fix a fissure on an aluminium Bike frame I it's aluminum 7011 or 6011 if I'm not wrong I'm sure I'm taking it to someone that can weld better than me but what would you use

On the first picture, my instructors weld is to the far right.

I've just been kind of winging it on the fabrication of this thing. I'm definitely going to jump around a lot to avoid warpage and tack everything together as much as possible before putting any real heat into. Anybody has any experience with things like this I'm all ears on tips or tricks / things to avoid moving forward. ✌️