I have zero welding knowledge/experience, but this was still interesting. Especially how you're using your hands to do things. Interesting technique. OK Google, stop texting and submit this comment.
Thank you Professor Serbu for breaking it down "Barney" style. This educational video is a great asset to those of us who are here to learn skills. Keep up the filming and I will keep watching.
HAHA! I also frequent the KnittingGuild website! Thanks for all your great discussions there! Edited to add - when re-welding something like that steel tubing - I'd recommend putting a tack at the very edge of the metal. The two pieces are perfectly flat before you start, but shrinking from your first tack further down will always shrink and pull up the edges like that. I start my first tacks at the edges, and then get closer down toward the tube bend... Then stitch fill in between. Works for my automotive sheet metal welds.
The narration to this video is brilliant. It's super convenient that you had that random metal laying around. That thing you're welding looks like the exhaust fibulator bearing for my 1962 Mazda RX7.
Follow up after a year. I got an 80% receiver and what's left of a receiver and weldments. Hopefully I can source rhe rest of the parts for an affordable price. Still have my seen mk3 to build. But I already have everything I need for that (except maybe a better welder)
I'm certified with a stick welder for work, pretty good with a mig welder,which is way easier, but I've never used a tig welder. Watching you makes me want to buy a tig machine. I've got some gocart frames & mini bikes that need tinkered with.
For a sheetmetal joint, consider the option of a countersunk lap seam / offset flush lap. This puts more base material at the joint (while leaving one side flush), and is more tolerant of minor welding imperfections. Very strong without needing to weld on the inner face.
The Anaheim, Azusa And Cucamonga Knitting Circle, Book Review And Gunsmithing Association? They're a fun bunch! Just don't leave the coffee pot empty, or all hell will break loose.
You were so lucky to have a bit of random steel that fits perfectly inside the 2 other bits of random square tubing you were joining together. Is that part of a knitting machine? looks pretty technical. Nice job.
If you want to weld everything, have the cleanest, most precise welds, go tig. I don’t regret buying my tig welder one bit. It was expensive, but worth it to me.
Not sure if it's been mentioned yet. But when I worked in the shipyards we'd use a trick to fair up uneven metals quickly like with the issue you had there with little shelves being present. We called it a "hot tack".. we'd do it by having a hammer ready by ya side.. go ahead and boil a weld in.. and immediately after ya tack it.. whack the high side to level them out. Works great when trying to flush surfaces that don't quite need a jig or saddle n wedges
It does work great, but I can't see it being applied here because of the weird shapes and precision involved.. and hot tacks really only work when you introduce filler to weld puddle.. here it's just fusion welding and no filler..
@SwampOperator Yeah likely so. Been a long while since I said this and I'd have to watch the video again but I'll take your word for it lol. At times I'll watch random welding videos here and see folks go thru all sorts of trouble and hassle to line up plates that back in the day I'd just whack to make them act right lol, then move on to the next one. I'm not sure if it's a well known trick outside of that world or not.
4 ปีที่แล้ว +2
Lovely 👌 Makes me want to try as well. Would probably burn something down though...
That's how you learn. The only sure way to avoid fire is to already know what you are doing, but it doesn't work like that. Just keep a fire extinguisher around.
The Beverly Hillbillies was probably as popular in the UK as the US . The red hot blonde may have something to with that . Like the new content and style and must agree that these heavy block " welding fixtures" come in very handy .
Mark, how do you find the thickness of a saw kerf, if you are putting one of the destroyed bang sticks, back together. Like prints and so forth so you can get correct dimension for that old mgun welded with original parts kit. Asking for a friend.
I always like these type of videos. Thank you Mark. I do have a question.. wouldn't you worry about heat shrinkage with the length of travel you did? Also your not adding filler? Just going over it to weld it together?
As long as the copper is flat and touching the steel it will always be difficult to get full penetration. In automation we put a groove underneath so that the bead will fuse together. Also you usually are better off adding a tiny amount of wire a the start and end and touch it up with a grinder. The issue with going over it and over again without adding wire to it is you are likely to cause a crack. This is against most codes on carbon steel or that reason. The wire contains deoxidizers that assist in floating the contaminants out. Also welding around corners prevents cracking later.
Great video! The "contamination" you got when you welded the edges and next to the edge on the inside was because the edge diverted the argon gas and you had less coverage. If you adjust the flow or use a purge fixture or bigger cup shouldn't be a problem.
Hey brother im having great trouble please gell out where did you get the front trunion piece to weld i have a repait patch comming and parts kit trunion a mess
How convenient and lucky you were to have such nicely fitting square blocks of metal laying around! Slides in perfectly. The micro fireworks you had on the inside were nothing to worry about. You welded the outside without shielding gas on the inside causing some oxygen bonds and inclusions to form there. When passing over the inside, these did what they do, but you were surely not contaminating anywhere deep into the wall thickness, that's for sure. The only thing I would be (only very slightly, if at all) worried about is the potential of a hairline crack to propagate from the mating at the radius part on the top, as it appears you didn't flow weld all the way there. I think you're totally fine. You were brave to tack the sides of the sheet though.... You must trust the starting amps of your welder very much. PS. Reps disco not much your thing? PS2. I've got SW17 and SW20 for you if you want
Wouldn’t slight beveling have resulted in greater depth? I realize you would have then needed to add filler metal. Is that something you wanted to avoid?
Clamps... Clamps everywhere... God damn without them I think we would still be in stone age. Even when I do simple work I need some third hand and Damm those small clamps are useful
Ironic that you're welding two pieces of tubing for some unspecified reason, using a "random piece of metal from the shop" to clamp them together (all presumably to discourage any censors from blocking complete access to your content and viewership), then you go and make a joke about taking acid and heroin last night! Perhaps this is intentional to prove some point about what censored gets censored...
was that a new center section? i have a kit coming and they look like they were cut with a plasma cutter freehand and not very square. im assuming there will need to be a gap/kerf for the correct length. i haven't seen any other video's welding them together. a few using new 80%s. im a welder so tiging them together is cake....just wondering on length getting shorter
Yes it's a new center section. The welding is pretty simple, but the receivers almost always warp and move. Check out my Uzi Resurrection videos on Full30.com and you'll see what I mean.
@@markserbu just tried, dotn know what the issue is but its unwatchable due to lag, no issue with youtube or netflix but that wow...stops every 2 words you say and loads for like 5 min in between
@@markserbu on it, been staring at a loading bar for a while now. looks like that is not working for me either. id suspect my internet but TH-cam is instant and Netflix is not lagging. i dont know what the difference is. its playing now same as the other. 2 word and 5 min load
@@markserbu took 2 hrs to watch the 2nd video lol best build video ive seen tho. yeah i was expecting to have to planish the welds a bit even if i used a jig. done that before. pulled the part out, straight in the jig but removed it spring s into its warp. i liek that you save the israli stamping. i want to do the same so heres hoping they didnt chop it. my kit will be here in a week. i will be doing a video on it too
Just found your channel; subbed! Great work & video! When homogeneous welding; you're at the mercy of the purity of the base metals, relative to inclusions. Not exactly knowing the base composition, 309L filler is very helpful. Curious what your PPS was? Reducing your PPS will increase heat input, & thus penetration. Great video & thanks again for taking us along-
Tack the ends first and put a bit of filler in .it will help you to stop blowing thru and leaveing crater crack . a small end cap for the tight spaces works great .welding was good though the way you did it👍
I have these Korean 33 round stick mags for a Glock and they suck because the steel they used on the inside is 2 pieces from the 15 round mags and they have a shelf where the 2 pieces of steel meet half way up the mag. This shelf catches the follower and the spring all the time. So the 33 round mags are good for about 15 rounds or so, but if you get the follower below that mismatched metal seam, it catches and you can turn the mag upside down and just dump the rounds out of it like a salf shaker.
Did you get all of that oxide coating off of the inside before you started stitching ? I probably would have used a piece of fine filler on the inside to add a bit more material. Did you have enough amps set on the knitting machine? Some day I will be doing a similar scarf for those long cold days.
I've used a copper spatula made from a piece of pipe and it stopped the burnthrough and kept splatter out while doing an autobody patch. Copper is like non-stick to welding.
Great video, It's cool that you still do things with your hands, However have you seen any of the 3d printed "square tube thingys" that are out as of recent? I know it's probably not your cup of tea, However it's the essence of what the founding fathers envisioned of the 2a.
if you do that job again---- you can make a block that slides inside the shell---- the block would have a groove milled around it on 3 sides that would create a passage behind the weld --- and you can purge the passage with argon---- that will make the inside of the weld wet as well as the outside. No nasty scale--- and it will be a much stronger weld------
This is the best welding instructional video of this year and maybe decade... I really like the transparent tig rig cup. That's something I never saw in boilers or powerhouses as far as that goes I've never seen one in the 40+ years in construction. So weld prep IE cleaning is 90 percent of a good tig weld.. Porosity will get you if you have too much wind, or even a dirty tig wire. As well as too much of a moist environment.. I guess welding has come a long way since my retirement. Never thought of a clear cup... Sounds and looks like you are using a high frequency rig, Back welding is the ticket... Maybe you should try a 1/8 tungsten and a mini touch with a button.. Again I am probably talking out of my ass. Too much caffeine and LSD from the night before.... Will make you shake especially, if your DTs are kicking in as well.... I digress..... God bless you and your loved ones Stay Safe Godspeed
This is easily the best knitting related video I have seen all day.
I tried to find that knitting forum, but I don't think I had the whole name guessed correctly.
It's stuff like this video that make me believe that Mark Serbu is probably one of the coolest cats in the business.
that was a nice cross stitch you did there. i need to get me a knitting machine like that
I have zero welding knowledge/experience, but this was still interesting. Especially how you're using your hands to do things. Interesting technique. OK Google, stop texting and submit this comment.
Love your videos... hate that YT is complete crap nowadays
I felt that way about YT until I heard the wit in these vids. Almost makes it worth it.
Thank you Professor Serbu for breaking it down "Barney" style. This educational video is a great asset to those of us who are here to learn skills. Keep up the filming and I will keep watching.
mark is my spirit animal
HAHA! I also frequent the KnittingGuild website! Thanks for all your great discussions there!
Edited to add - when re-welding something like that steel tubing - I'd recommend putting a tack at the very edge of the metal. The two pieces are perfectly flat before you start, but shrinking from your first tack further down will always shrink and pull up the edges like that.
I start my first tacks at the edges, and then get closer down toward the tube bend... Then stitch fill in between. Works for my automotive sheet metal welds.
The narration to this video is brilliant. It's super convenient that you had that random metal laying around. That thing you're welding looks like the exhaust fibulator bearing for my 1962 Mazda RX7.
always good to have some more tips on welding general purpose rectangular tubing
Amazing job! This will help with my... uh... Israeli rectangle reweld ;)
I learn something every time I watch your videos... Thanks!!!
Great knitting, thanks for the inspiration!
Oh yeah, I watched the Beverley Hill Billies when I was a young man, those were the good old days.
Scary thing is I hadn't considered that anyone didn't know who Jed Clampett was.
You're doing that with your HANDS!?!?
love the videos Mark. I really need to pick up one of these kits and get knitting
Follow up after a year. I got an 80% receiver and what's left of a receiver and weldments. Hopefully I can source rhe rest of the parts for an affordable price. Still have my seen mk3 to build. But I already have everything I need for that (except maybe a better welder)
@@ChevTecGroup did you end up finishing it
Following up 2 years later. Ill have all the parts this week and i started welding last night haha @Podzhagitel
Best knitting video by far, and that "random piece of metal" looks like a great fit.
I learn something new with each video, thank you.
I could watch this all day !!
I'm certified with a stick welder for work, pretty good with a mig welder,which is way easier, but I've never used a tig welder. Watching you makes me want to buy a tig machine. I've got some gocart frames & mini bikes that need tinkered with.
awesome video. Also got my RN50 and i wanted to say its the most fun rifle ive ever shot. Thanks, Mark Serbu!
Very informative video with hard to find information about the relationship between knitting and welding.
I can’t WAIT till you get the MINI weld job done!
For a sheetmetal joint, consider the option of a countersunk lap seam / offset flush lap. This puts more base material at the joint (while leaving one side flush), and is more tolerant of minor welding imperfections. Very strong without needing to weld on the inner face.
I wish you'd start a channel on Rumble where you don't have to worry about the thought police censoring your excellent videos.
The Anaheim, Azusa And Cucamonga Knitting Circle, Book Review And Gunsmithing Association?
They're a fun bunch! Just don't leave the coffee pot empty, or all hell will break loose.
Brilliant 😅🥳 always loved knitting! Especially such things, I'm on the guild too.
Grind, sand and weld, right. You're better than me. That's really good!
Good idea to use the copper as a shim and backing strip. I'll have to remember that one .
Mark needs to adopt me ASAP, he’s a little crazy, but he’s my type of guy!
You were so lucky to have a bit of random steel that fits perfectly inside the 2 other bits of random square tubing you were joining together.
Is that part of a knitting machine? looks pretty technical.
Nice job.
nice welds! that upper came out clean
Sweet!!! Great job!
You are my spirit animal Mark!
That quilt is going to be so nice.
Makes me want to purchase a Tig setup, for more welding endeavors!!
If you want to weld everything, have the cleanest, most precise welds, go tig. I don’t regret buying my tig welder one bit. It was expensive, but worth it to me.
Yes sir copper backing works great for thin stuff or thin landings. With sheet metal I prefer it to ceramic.
I know nothing about engineering but I know a lot about firearms. You make me want to start making guns
Awesome! Get yourself over to Weaponsguild.com, join up and start learning!
Not sure if it's been mentioned yet. But when I worked in the shipyards we'd use a trick to fair up uneven metals quickly like with the issue you had there with little shelves being present. We called it a "hot tack".. we'd do it by having a hammer ready by ya side.. go ahead and boil a weld in.. and immediately after ya tack it.. whack the high side to level them out. Works great when trying to flush surfaces that don't quite need a jig or saddle n wedges
It does work great, but I can't see it being applied here because of the weird shapes and precision involved.. and hot tacks really only work when you introduce filler to weld puddle.. here it's just fusion welding and no filler..
@SwampOperator Yeah likely so. Been a long while since I said this and I'd have to watch the video again but I'll take your word for it lol.
At times I'll watch random welding videos here and see folks go thru all sorts of trouble and hassle to line up plates that back in the day I'd just whack to make them act right lol, then move on to the next one. I'm not sure if it's a well known trick outside of that world or not.
Lovely 👌 Makes me want to try as well. Would probably burn something down though...
That's how you learn. The only sure way to avoid fire is to already know what you are doing, but it doesn't work like that. Just keep a fire extinguisher around.
Practice makes perfect and one thing that should be attached to every welding cart/machine is a fire extinguisher
Mark. I am so glad to see you have a interest in knitting also its been a big hobby In my family and has been passed down for generations.. 😆😆🤪
The Beverly Hillbillies was probably as popular in the UK as the US . The red hot blonde may have something to with that . Like the new content and style and must agree that these heavy block " welding fixtures" come in very handy .
As always excellent work! Thanks for sharing part of your work day with us
Great welding video on tube welding.
Mark, how do you find the thickness of a saw kerf, if you are putting one of the destroyed bang sticks, back together. Like prints and so forth so you can get correct dimension for that old mgun welded with original parts kit. Asking for a friend.
Fantastic!!!! Incredibile welding a big capolavoro ✌️✌️👍👍👍👍👍👍👍
I always like these type of videos. Thank you Mark.
I do have a question.. wouldn't you worry about heat shrinkage with the length of travel you did?
Also your not adding filler? Just going over it to weld it together?
As long as the copper is flat and touching the steel it will always be difficult to get full penetration. In automation we put a groove underneath so that the bead will fuse together. Also you usually are better off adding a tiny amount of wire a the start and end and touch it up with a grinder. The issue with going over it and over again without adding wire to it is you are likely to cause a crack. This is against most codes on carbon steel or that reason. The wire contains deoxidizers that assist in floating the contaminants out. Also welding around corners prevents cracking later.
What size needle are you knitting with and what are your knitting machine settings?
My guess would be 3/32 tungsten by the looks of it as it looks too big to be 1/16
Great video!
The "contamination" you got when you welded the edges and next to the edge on the inside was because the edge diverted the argon gas and you had less coverage.
If you adjust the flow or use a purge fixture or bigger cup shouldn't be a problem.
Voting for bigger cup, that tiny cup is not for that use.
Yep. I came to comment the same thing. He could also extend the copper flashing past the edge to hold the gas.
Thanks Mark.
Great video as usual. Love your channel for knitting tips 👌
Nice work. I would like to see some nice knitting work done on some British sheet metal.
Coolest kind of rectangular tubing haha
What you said had me cracking up inside 🤣🤣🤣
Hey brother im having great trouble please gell out where did you get the front trunion piece to weld i have a repait patch comming and parts kit trunion a mess
Imi welding. Too funny. Nice stiching!!!! U Zid Incredible on this chunk of metal!!
LMFAO, knitters helping knitters!
What is this? TIG or MIG?
1:29, 1:31
@@markserbu thank you
Knitting Guild?
News to me.
How convenient and lucky you were to have such nicely fitting square blocks of metal laying around! Slides in perfectly. The micro fireworks you had on the inside were nothing to worry about. You welded the outside without shielding gas on the inside causing some oxygen bonds and inclusions to form there. When passing over the inside, these did what they do, but you were surely not contaminating anywhere deep into the wall thickness, that's for sure. The only thing I would be (only very slightly, if at all) worried about is the potential of a hairline crack to propagate from the mating at the radius part on the top, as it appears you didn't flow weld all the way there. I think you're totally fine. You were brave to tack the sides of the sheet though.... You must trust the starting amps of your welder very much. PS. Reps disco not much your thing? PS2. I've got SW17 and SW20 for you if you want
Wouldn’t slight beveling have resulted in greater depth? I realize you would have then needed to add filler metal. Is that something you wanted to avoid?
Clamps... Clamps everywhere...
God damn without them I think we would still be in stone age.
Even when I do simple work I need some third hand and Damm those small clamps are useful
Did you get some steelwool and knitted that rectangular tube???? :)
Great video. Curious about what machine and settings you used on this.
glad to *receive* this in my suggested
I've used the same shop fixture to align the same weld joint. What a coincidence
very nice!
ممكن اسم ماكنة اللحام.وهل هية ماكنة لحام اركون.
Where did you find the long front receiver section?
Ironic that you're welding two pieces of tubing for some unspecified reason, using a "random piece of metal from the shop" to clamp them together (all presumably to discourage any censors from blocking complete access to your content and viewership), then you go and make a joke about taking acid and heroin last night! Perhaps this is intentional to prove some point about what censored gets censored...
So is that called manufacturing or repairing or modifying? I like it and going to try this
What equipment are you using to weld?
LOL, I passed over this video at least 10X till I saw who it was............ I love knitting!
was that a new center section? i have a kit coming and they look like they were cut with a plasma cutter freehand and not very square. im assuming there will need to be a gap/kerf for the correct length. i haven't seen any other video's welding them together. a few using new 80%s. im a welder so tiging them together is cake....just wondering on length getting shorter
Yes it's a new center section. The welding is pretty simple, but the receivers almost always warp and move. Check out my Uzi Resurrection videos on Full30.com and you'll see what I mean.
@@markserbu just tried, dotn know what the issue is but its unwatchable due to lag, no issue with youtube or netflix but that wow...stops every 2 words you say and loads for like 5 min in between
Odd....works fine for me. Well, try my Bitchute channel: www.bitchute.com/channel/vLS6uEpJXpc5/
@@markserbu on it, been staring at a loading bar for a while now. looks like that is not working for me either. id suspect my internet but TH-cam is instant and Netflix is not lagging. i dont know what the difference is. its playing now same as the other. 2 word and 5 min load
@@markserbu took 2 hrs to watch the 2nd video lol best build video ive seen tho. yeah i was expecting to have to planish the welds a bit even if i used a jig. done that before. pulled the part out, straight in the jig but removed it spring s into its warp. i liek that you save the israli stamping. i want to do the same so heres hoping they didnt chop it. my kit will be here in a week. i will be doing a video on it too
Can I get a link to the mentioned knitting site? Thanks👍
God damn it I love mark 😂
What TIG machine did you use? What were the settings? I happen to have this same tubing in my garage and I want to weld it too.
Wouldnt you purge if it was precision?
Just found your channel; subbed!
Great work & video!
When homogeneous welding; you're at the mercy of the purity of the base metals, relative to inclusions. Not exactly knowing the base composition, 309L filler is very helpful.
Curious what your PPS was? Reducing your PPS will increase heat input, & thus penetration.
Great video & thanks again for taking us along-
What are the deets on your "knitting" rig? Any info you're willing to share?
I'd suggest acquiring a few Kant-Twist clamps. Vice grips have their place, but there are times where they aren't the best choice for a job.
Tack the ends first and put a bit of filler in .it will help you to stop blowing thru and leaveing crater crack . a small end cap for the tight spaces works great .welding was good though the way you did it👍
I have these Korean 33 round stick mags for a Glock and they suck because the steel they used on the inside is 2 pieces from the 15 round mags and they have a shelf where the 2 pieces of steel meet half way up the mag. This shelf catches the follower and the spring all the time. So the 33 round mags are good for about 15 rounds or so, but if you get the follower below that mismatched metal seam, it catches and you can turn the mag upside down and just dump the rounds out of it like a salf shaker.
Thank you.
ive always wanted to learn about knitting!
...and I still do!
Great video! What model tig are you using.....my mig skills aren't the greatest....today looks sooo nice
Did you get all of that oxide coating off of the inside before you started stitching ? I probably would have used a piece of fine filler on the inside to add a bit more material. Did you have enough amps set on the knitting machine? Some day I will be doing a similar scarf for those long cold days.
I hope you share the finished product at work when it's finished.
Very good 👍👍👍
6:10 Huh, what a coincidence, my grandpa also used to walk to school uphill both ways through the snow
I've used a copper spatula made from a piece of pipe and it stopped the burnthrough and kept splatter out while doing an autobody patch. Copper is like non-stick to welding.
Its non stick for STEEL welding. It gets squirrely with other materials like aluminum
Whoah real hands?! That’s something only 2090s kids will understand.
Thanks Mark, I need to stop in and buy you lunch one day...
Great video, It's cool that you still do things with your hands, However have you seen any of the 3d printed "square tube thingys" that are out as of recent? I know it's probably not your cup of tea, However it's the essence of what the founding fathers envisioned of the 2a.
Agreed, the Macdaddy looks like it can easily be reproduced in metal if you go to straight mag.
Great knitting project, will it be for sale in the future?
if you do that job again---- you can make a block that slides inside the shell---- the block would have a groove milled around it on 3 sides that would create a passage behind the weld --- and you can purge the passage with argon---- that will make the inside of the weld wet as well as the outside. No nasty scale--- and it will be a much stronger weld------
What would be (if any) the adavantage of using a rod to feed metal ?
To not produce a grooved surface (which could be a weak point if there isn't enough base metal to fuse) and allow for more grab on the surface.
This is the best welding instructional video of this year and maybe decade... I really like the transparent tig rig cup.
That's something I never saw in boilers or powerhouses as far as that goes I've never seen one in the 40+ years in construction.
So weld prep IE cleaning is 90 percent of a good tig weld.. Porosity will get you if you have too much wind, or even a dirty tig wire.
As well as too much of a moist environment..
I guess welding has come a long way since my retirement. Never thought of a clear cup...
Sounds and looks like you are using a high frequency rig,
Back welding is the ticket... Maybe you should try a 1/8 tungsten and a mini touch with a button.. Again I am probably talking out of my ass. Too much caffeine and LSD from the night before.... Will make you shake especially, if your DTs are kicking in as well....
I digress.....
God bless you and your loved ones
Stay Safe
Godspeed
Thank you
Speaking of knitting, Have you ever used a pulse tig on thin material?