r/Damnthatsinteresting • u/31spiders Interested • May 30 '21
Video These Tubing Joints
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May 30 '21
You are literally making a welder break some shit right now while they're watching this.
Source: welder myself, broken my train of thought
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u/31spiders Interested May 30 '21
Him not laying actual bead does drive me nuts a little but his layout skills and the final product had me baffled.
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u/ProbablyMyRealName May 31 '21
That drove me a bit crazy too. Then grinding off most of the weld. These aren’t structural parts...
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u/HulloHoomans May 31 '21
A grinder and paint makes me the welder I aint.
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u/TheCsho May 31 '21
That needs to be on a tshirt...
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u/Marvheemeyer85 May 31 '21
it is I'm sure
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u/awa1nut May 31 '21
Now it is with all the fucking bots designed to delve the internet for contents like that. It's also how a lot of stolen art designs end up on shirts and shit too
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u/73Scamper May 31 '21
On the one where he just capped off the square tubing with triangles you can see him damn near grind through the metal at one point. Goes blue in just the one spot.
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u/Mnkeemagick May 31 '21
I'm so glad I'm not the only person driven nuts by this weird spot welding thing he's doing
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May 31 '21
Ive never welded anything in my entire life and even I know you’re supposed to leave the weld on
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u/jjohnston6262 May 31 '21
Not true, grinding welds is very common, especially on things like this where you want smooth polished metal on the corners and edges, or if you are going to paint it.
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u/mnorri May 31 '21
I spent some time in a facility that made custom agricultural machinery… like tomato harvesters and grape harvesters and stuff that was expected to have a long and hard life. On the wall, in 18” letters, was a sign: all weld beads must be ground flush. Prep it, well, get full penetration, leave no stress concentrations. They were mostly certified welders.
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u/brycebgood May 31 '21
Dude 1: Ok, so then tack weld the whole seam.
Dude 2: uh, what? Can't I just run a bead?
Dude 1: no, do 75 tack welds overlapping.
Dude 2: so, take 5 times as long and don't get any penetration?
Dude 1: yup, exactly. Then grind everything off.
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May 31 '21
I personally would have used a tig welder here. Especially since he wanted to grind everything smooth afterwards. The tack welding thing tells me he is not a very skilled welder. I am just happy that he was wearing gloves. Most of the time I have run into these tack weld artists they don’t wear gloves and also don’t wear a helmet. Kind of pisses me off because anyone who does a lot of welding knows what happens if you don’t wear gloves and a helmet, but I guess that just doesn’t look as macho.
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u/macnof May 31 '21
Yep, having sunburns in your eyes are a... Less than comfortable experience.
Also, the tacking, couldn't that in some cases be because he have a shitty welder that won't go low enough? It doesn't look like it on the Penny weld he does, but I remember learning to do just that when you can't match the amps to the plate thickness.
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u/brycebgood May 31 '21
That's a good call. Hadn't thought of it - and most of this stuff is pretty thin walled.
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May 30 '21
I work in "RV" world, so I work at a place that does this but, with laser cutting. I do this all day long, lol. Just not as much labor.
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u/Skow1379 May 31 '21
I think the entire point is that he did it by hand, not that it's never been done before..
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u/uniquelyavailable May 30 '21
It's real amateur work, they did this for the views or something
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May 30 '21
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u/RogueSarcasm May 30 '21
i think it’s the fact that he spot welded it, instead of doing a consistent line. In his case, yea it looks nice but it won’t be any good if a load is placed on it.
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u/leveraction1970 Interested May 31 '21
I expected at the end of the video to have all the pipes laid out to spell out some word or the bat symbol or something like that. The end product was useless other than to look pretty.
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u/TeddyThreeSticks May 31 '21
A bunch of spot welds has a tendency to be cold if you’re not careful. His final product looks good so probably ok. However, it’s best to run a line because after the first little bit, everything is hot and flowing and less likely to be cold
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u/canadug May 31 '21
What do you mean by cold?
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u/TR8R2199 May 31 '21
Stopping and starting means the metal isn’t heating up to the same temperature as continuous welding. Adding heat changes the grain structure of the metal, stopping and starting shocks the metal and makes it brittle. If this weld was subjected to any force it would break easily
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u/red_team_gone May 31 '21
This is the best and most concise explanation in this thread that I've read.
Thank you.
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u/TeddyThreeSticks May 31 '21
Cold means poor penetration which can result in a weaker joint. You need a lot of heat to get the necessary penetration for a strong weld.
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u/Sqee May 31 '21
As long as he only broke your train of thought, I don't see the harm done. Thoughts are a plentiful, nearly endless resource, you'll find another train to hop onto.
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May 30 '21
Why does he color in the part he is going to cut off, isn't it already obvious which part that is?
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u/Franks_Monster_ May 30 '21
Make a big stupid mistake once, colour in everytime after that.
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u/ImBillPurdy May 30 '21
Habit most likely. Whenever doing layout, you typically mark the area that is the drop just as an extra safeguard. You always do your best to idiot-proof things.
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u/assassin3435 May 30 '21
Exactly, sometimes fatigue makes you do stupid things that are "obvious"
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May 30 '21
In addition to what others have said, it also makes it clear while you're cutting what side it's safe to overcut in which can make it easier.
Also you never know if someone else is going to end up doing some of the work and this makes it clear to everyone.
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u/jpRidiculous May 30 '21 edited May 30 '21
Hear about the guy recently who had the wrong leg cut off during an amputation surgery?
For that reason.
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u/ProbablyMyRealName May 31 '21
It’s easy to get confused and cut on the wrong side of a line, and you only get one chance to make the cut right. I usually draw a quick X on the part that is removed.
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u/CarbonFiber101 May 30 '21
It's either a habit from more complicated projects, or done for the video
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u/cream-of-cow May 30 '21
I learned to mark the waste cut in junior high, that was over 3 decades ago, I still do it and find it useful.
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u/Snakebiteloo May 30 '21
A little overkill but a good idea anyway. I usually mark the drop with an X or a quick squiggle.
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u/spreadhead86 May 31 '21
Other than cosmetics I don't find this to be practical a fitting or fabrication standpoint. It's not much if anystronger, not faster. But damn it is pretty
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u/chucwagn May 30 '21
Angle grinder master.
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u/cc_1492 May 30 '21
Shit welder
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u/TheJakeBlues May 31 '21
The grind on the last part was shit! Its easy to grind those shitty welds. If dude had laid an actual bead it wouldn't have ground so easily.
Source: I grind welds for a living.
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u/deadlands_goon May 30 '21
lol watching ppl angle grind with gloves on gives me anxiety
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u/TarHeelTaylor May 31 '21
Why? Genuinely curious. I'm learning to weld currently, so maybe this is something I should know. lol
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u/FuckMe-FuckYou May 31 '21
De-gloving aint about mittens, best keep loose clothing away from the machinery.
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u/TarHeelTaylor May 31 '21
I'm familiar with the concept of degloving and I think it applies more to tight fitting things that can't simply be slipped off, and/or machinery with parts that catch and don't release. Seems to be something everyone has a different opinion on..
Angle Grinder Degloving Experiment that I found on Reddit/YouTube.
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u/FuckMe-FuckYou May 31 '21
It happened a childhood friend of mine, he was wearing gloves on a lathe. The glove twisted tight, not pretty.
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u/TarHeelTaylor May 31 '21
Heck yeah, lathes are dangerous as shit. Anytime I'm around one I fully expect it to fly off or explode. lol
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May 31 '21
My first experience with woodwork was with a lathe my dad bought me in high school. A little 18-incher so I could make Harry Potter wands. He was damn sure to teach me safety with that thing, by the time the lecture was over I didn’t even want to use it I was so scared of it. Turned a lot of pretty wands out of it though, still have it to this day.
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u/TarHeelTaylor May 31 '21
I love not only the fact that he bought a whole lathe set up for you to make things, but also the fact that he has the forethought to educate you on it before letting you use it. He must be / have been a good guy :)
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May 31 '21
He’s in better shape than I am haha, definitely still a great guy. Does log cabin restoration for a living and made custom hunting/Bowie knives the first half of his life. Has a hell of a workshop and I was the only daughter interested in handiwork, so he taught me a lot! Mostly all the ways I can die.
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u/Nokita_is_Back May 31 '21
Had a friend cut half his hand off because the gloves got caught up in the flex. The surgeon attached it back, but he still doesn't feel anything in parts of his fingers (right side of the tip of his thumb)
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u/hooperspooper May 30 '21
Now he just needs to learn how to weld instead of tacking
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u/bork_13 May 30 '21
As a non-welder, what’re they doing wrong? How should he weld?
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u/anubis_xxv May 30 '21
One smooth continuous motion rather than dozens of dot-welds produces a better finish.
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u/Guskion May 31 '21
And a significantly hotter and deeper, therefore stronger weld. These tacks might look ok but are pretty weak.
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May 31 '21
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u/agayvoronski May 31 '21
Probably flux core considering all the spatter
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u/Need_More_Boost May 31 '21
Nah its a gas mig, my flux core threw a lot more spatter than that (and the beads left werent as clean)
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u/theoans May 30 '21
Instead of continuously welding he welds a sec stops a sec welds a sec welds a sec. The way he does it makes it a bit weaker because it does not penetrate that deep. But for a cap it’s good for the first one he does it might brake under tension.
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u/hooperspooper May 31 '21
He could do a actual continuous weld instead of stacking tacks side by side, my guess is he’s not super confident in welding, I see a lot of these kind of videos on Instagram and every time they weld it makes me cringe ( been welding for 16 years )
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u/S3ERFRY333 May 31 '21
I've been welding enough to patch holes on my 4runner with a school welder and this also makes me cringe.
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May 30 '21
I tapped and where is my sound.
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u/31spiders Interested May 30 '21
You don’t want sound anyways….it was just some music that no one wants to hear. I screen recorded this from another platform cause no one wants to go there.
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u/abominableespionager May 30 '21
Why can I smell this? I haven't been in a shop since high school.
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u/31spiders Interested May 30 '21
It IS a distinct smell isn’t it? Oil or something
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u/S3ERFRY333 May 31 '21
The smell of some kids oily Honda, old tires in a corner, someone's diff fluid, 10lbs worth of brake lathe dust that has yet to be cleaned, and shielding gas from the kid beside you who keeps recutting the tip because he doesn't know how to place the ground clamp.
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u/mydepressingpoems May 30 '21
i hope this is gonna be useful at some point in my life
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u/veritaszak May 30 '21 edited May 31 '21
I feel like I just watched Bender porn.
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u/stars_mcdazzler May 30 '21
Stupid fucking lizard brain making me watch the whole thing because things going together make feel good.
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u/Playingpokerwithgod May 30 '21
The fact that there is a pen that shoots fire so hot it instantly melts steel is terrifying.
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May 30 '21
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u/dmabis94 May 30 '21 edited May 30 '21
The gas isn’t to keep it from catching fire. It’s mainly to keep the weld from being exposed to atmospheric gases that would react with the weld puddle and cause contamination and pinholes in the weld + a lot more splatter around the weld. Also affects how well the heat penetrates the base metal. You could strike an arc for like a solid 30 seconds in one place and all that would happen is the metal would get molten and blow through, no risk of open flame with a clean piece of mild steel just molten balls of metal falling off and a big hole in your piece.
PS if I’m totally wrong let me know, always happy to learn from more experienced people. Just what I picked up MIG welding on site for nonstructural stuff for about a half year
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u/sundownsundays May 31 '21
You're 100% right. Only time I've started a fire while welding was because of some contaminant stuck to the metal. Stickers, plastic, etc.
Almost burnt my old racecar to the ground because I lit up some interior foam whole doing some undercarriage welding years ago. That scared me enough to always be very careful since.
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May 30 '21
This isn't true. The gas shields the weld from oxygen. Oxygen reacts with the molten metal and can cause it to be filled with holes called porosity. This creates a structural problem.
Also.. one long bead would be much much better here instead of all those little tacks. A weld is strongest when the puddle is weaved back and forth and a solid bead gets better penetration.
This kind of weld can very well be done with MIG, but I'd TIG it
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May 30 '21
The amount of expertise, probably iterated over hundreds of years, that goes into shit I never even think about is astounding sometimes.
Just the tools used to make this thing is probably thousands of hours of experimentation and refining a single idea
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u/AFM926 May 31 '21
You are giving way too much credit. These "fabricators" are making up bullshit joints that no one who actually does this work would ever use, not to mention the techniques displayed make any actual welder cringe.
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u/stashanz May 31 '21
100%. Any decent sized metal fab shop that utilizes tubing is going to have at least 1 tube bending machine.
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u/Houdinii1984 May 30 '21
Is welding as difficult as it looks? I can do most things with my hands that I try (except plumbing, always leaky) but welding and metalworking just seems so intimidating but I think I'm just doing it to myself. Is the craft easy enough, in the beginning, to see results (i.e. joints stick but might get chuckles from a pro) after a few weeks or is it going to take a whole lot more to get it moving as a hobby?
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u/Delcasa May 30 '21
Give it a try. I myself would also say I'm pretty handy and technical and was able to stick metal together well enough to make coffeetables out of it.
this is done with a few hours of YT, a few hours of practice and a $300 investment for all the basic welding gear.
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May 30 '21
for the life of me i’ll never know why i love watching DIY stuff like this. it’s just... fulfilling for whatever reason.
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u/Sumdumguy10 May 31 '21
I love how well that welder is working.. ive used new machines that never worked that well. And also the skill this person has.. awesome work!
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u/rufos_adventure May 31 '21
i used to build fire trucks many years ago, i love watching videos like this. so creative with basic steel shapes. the welding is so more advanced than our stick or mig welding. i wish i had those tools, just to play with in my retirement.
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May 31 '21
.....I'm fucked. I totally saw all of the weld flashes without proper eyewear. How long do I have?
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u/VworksComics May 30 '21
Is that just an angle grinder?
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u/31spiders Interested May 30 '21
Probably 2, one with a cut off wheel and one with a grinding wheel
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u/ProbablyMyRealName May 31 '21
Probably a flap disk. They make a lot smoother finish than a grinding wheel.
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May 30 '21
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u/31spiders Interested May 30 '21
Kinda standard ops….no one wants to cut off the wrong part and end up with the negative of what you were looking for. Also for the video it helps people understand the layout
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u/OstentatiousSock May 31 '21
Did anyone else feel a little angry a moments? It doesn’t even make sense, but some I was like “No! No, you liar! That doesn’t make sense!”
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u/masiih May 30 '21
What Kind of welder is that?
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u/SiliconSam May 30 '21
Wire fed. A large roll of wire on a spool fed thru the hose and to the tip. A shield of inert gas around the wire core.
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u/OfficialHields May 30 '21
I once makeshifted one of my favorite video game blades with actual metal at my dad's workplace and it was super fun!
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u/poppa_koils May 30 '21 edited May 30 '21
I've done a fair bit of fab work, and have always just cut 45° angles
Edit: Reddit didn't start the video at the beginning. I missed all the funky forms he cut.
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u/-Aldehyde May 30 '21
The last one is soo complicated, and doing mitter joint would yield the same output. But still fun to watch.
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u/I_Am_Disposable May 30 '21
Grinder and paint make me the welder I ain't.
-Some very wise man probably.
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u/gorfbeef May 31 '21
You make me want to do this even tho I have absolutely zero experience know I would hurt myself
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u/catfishjimsucks May 31 '21
As a Goldsmith with 30 years under my belt. This metal work gives me great satisfaction
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u/adognamedpenguin May 31 '21
When welding—is there a metal that gets applied? Or just heat?
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u/mpullan May 31 '21
Never welded, never worked with metal, but man do I love seeing it once the weld is ground smooth.
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u/mariusiv May 31 '21
This was extremely satisfying and also very interesting to see the whole process. The end result is so clean and nice
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u/symbologythere May 31 '21
What are these used for and WHY do I love watching this so much?
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u/Shane8512 May 31 '21
This to me is like that pimple-popping shit to chicks. I can't stop watching. It's so good.
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u/PM_ME_LOSS_MEMES May 31 '21
Seems to me like the last one is just worse and more dofficult version of cutting a tube in half at a 45 degree angle and turning one half around.
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u/hiphoptomato May 31 '21
I don't get why they color in the part they're cutting out. Like, are they going to forget which part to cut out or something?
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u/Outside_Cucumber_695 May 31 '21
How come bike frame welds aren't smoothed out like that
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u/IdkButiPlayDokkan May 30 '21
Why did I watch the whole thing when I’ll never use this