Bob, I would like to see more about O/A pressures. What pressures to use for heating, what pressure to use for cutting, etc. Another thing i would like to see is how to set up a cutting torch for cutting through steel. I work at a scrapyard so knowing more about cutting through rusty truck frames, cutting 1" plate apart, etc etc would be awesome. Love the videos!
This brings back a fond memory of mine. When I was about 14 years old I asked my Dad to teach me to weld (he welded in the oilfield and plants for 50 years.) He said fine drag the torch out. My comment was - I didn't want to do that teach me mig and tig. We argued for a while and he settled it saying - you know those planes from WWII you love to study, guess how they were built?? Answer - a housewife built them with oxygen and acetylene, now learn this and I'll teach you the rest. That settled it, I learned the torch and some (not all) of the rest. I'm convinced it made it all better starting here. I'm not a welder today but I still tinker when not playing entomologist around cotton fields in the US. He told me later he started working for Tennessee Gas welding and they required everything under 2" to be gas welded. Thanks for the videos.
Oxy acetylene was often the first process taught in welding classes back in the day (OIT). You learn to manipulate and direct heat to control the puddle. I still feel this is a good foundation to learn other processes.
Just started welding school a month ago. This is by far my favorite process. OAW just feels so meditative, just the sound of a steady flame as you gently push the puddle. Definitely a lot quieter then Stick, my ears hurt from the grinders and chipping hammers 🤣
I don't weld much, and haven't tried it for years. Oxy-acetylene is all I have to do it with. I have a little welding that needs to be done, to fix a broken brace on a trailer. It looks like it got hit and broke off at the original weld. If I get enthusiastic and this one works well, I might do a lot more. These basic videos on how to set it up, what to watch for, how to do the weld, etc are very helpful! This little project doesn't have to be pretty, thank goodness. Just strong.
Sir I really want you to know how much I appreciate you taking the time to talk through a weld and not cut the film. It is immensely helpful. Thank you for these videos.
Really appreciate this video. I'm learning o/a and really enjoying it. Purely a hobbyist, I need and enjoy the versatility that oxy-fuel offers. There aren't many YT videos that spend the time demonstrating and explaining like you did with this one. I identified several things that I'm NOT doing yet but will begin doing now that I've seen it done correctly. The process may be "old school" but I'm okay with that. It gets the job done without the multi thousand dollar investment of TIG and the longer learning curve that I may not live/work long enough to acquire.
Very useful video for me, as I used to have similar problems when doing TIG and Oxy A, and tended to try and keep going instead of stopping and re -assessing what was going wrong. I learn something every time I watch Mr Moffat. Pretty impressive how he keeps calm when it does not go right, I'd be cussing like a mule train driver.
thanks Bob for the great video, it's very much appreciated. I believe your were right on the O/A fillet weld. I think it's the hardest one to weld. Not as easy as the outside corner and the heat is always burning your rod holding hand and arm. Steve Bleile made a couple of good tips on his O/A video. Preheat a little bit in front the area to weld and it will be easy to get a puddle going quick. And keep the filler rod just close enough to the flame to keep it almost molten on the tip. When you dip it in the puddle, it won't cool the puddle down much as it was already molten hot. When you do that, it helps the weld to move along quicker as it is not cooling down as much. Once again, I'm glad you are doing the O/A vids for all of us. I really enjoyed them. Dan.
Thanks for actually showing the problems when they are happening and what one might do to correct them. I just need to remind my self that if its welding fine and then goes to crap. I should stop and try to figure out why and not plow on to the end. Its good oxy tips are short ..... less likely to close it in your tail gate or wrap in up in a fan like Bill did. ;)
Thanks for the video. I find that you learn more from problems than things that go smoothly, but hardly anyone wants to show you they had a problem. It's great to see a pro work through a problem, it won't stick quite as well as me working through the problem but it's close! Great work.
Thank you for a great gas welding video! I took welding /ag mechanics thru fours years of high school with 3 years of student teaching. I had three different teachers during that time and not one of them could do the type of gas welding I had taught myself. I've never done TIG welding or much of any wire feed welding at all. I've built headers for dirt bikes, exhaust systems for all kinds of trucks and would not have been able to do any of those projects if I had not learned this type of welding. Thanks again for a good video!
excellent display of skill and coordination , just how i was taught in 1976 as an apprentice panel beater, just as you said in another video, New welders should start here, jumping straight in to MIG is great ,but if they learn this, then SIF Bronze welding , as i was told it was called, EG Brazing , i saw in a video this was used to join up the subframes on E TYPES AND D TYPES then electric arc, stick, then MIG, then TIG , and all it can do, i have mastered all, and still prefer to gas weld, with flux my alloy panels, before i wheel them, just so satisfying to do, love the videos, keep them up. Les
I have read many documents and watched even more videos, but you explanation about the gas welding process was the most enlightening work I have perused. While I certainly need more practice, I now have a better understanding of what to do. I am sure I well be rewatching this video many times.
It's crazy to me how overlooked an oxy/acetylene setup is. It's so versatile. You can weld, braze, cut, forge (to a certain extent), and probably more. For what you pay, it might be the only tool you need to get started, especially for those that don't have access to the power required to run electric, or protection from the elements, like in your backyard, because you only have a tiny shed for storing your tools. There's a reason this older technology hasn't completely died out.
Bob, you are the instructor I never had. Thank you ( and the college ) for all your valuable time and knowledge. Please can we have some more Oxy/Acet videos, from basics through to advanced, as 'old school' is right where it's at for me ( and others). I work in a busy fab/engineering environment in the UK and we use multi processes from stick, Tig and flux core Mig but I love to 'play' with Oxy/Acet at the weekends. You deman, Bob. Keep it all coming. Thanks.
Im in APEX. And the segments go as followed Blueprint/theory, oxy/acetylene, SMAW, GMAW, GTAW and finally Advanced SMAW... I always watch your videos for tips to help me out when i run into a problem or if i want to try a new method i love the content please keep it coming much love from new york 🙏
I definately think it would help to elevate the piece, when you first attempted to weld the backside the welding table was likely acting like a chill block. I learned that one the hard way a time or two. Thanks again for this often overlooked material Bob.
Have not gas welded since high school. I am not a welder but find this process would be very handy on the farm. Thanks for the video. Also when starting welding I think this process is great to get too know how to control the puddle.
Great Videos Bob, We were told years ago to use white distilled vinegar to stop the flakes. Seems to work. Of course back then we used clothes hangers as rod a lot of times. Keep up the great work.
Great technic! Learned a few pointers I'm going to try in my welding class. I'm loving Oxy/Acetylene welding and I can' t wait to get my own oxy/acetylene set. Thank you for all you do.
I like the way you discussed the three flames. Can you make a video that goes into more detail in cutting with a torch and the three flames and usages?
At 16 min, talking about using the parent metal itself for filler: "Autogenous". Enjoyed this, have also found it difficult to use a torch on the inside corner like that. I once read something about this, that the filler wire was applied to the top edge of the fillet to sort of protect it and reduce that undercut, I never have done that. Now I can at least see what he was talking about. In its province, torch welding is a lot of fun, easy and good control. I'm thinking mostly very thin material, and also brazing and silver-soldering.
Doing this as part of my 1st year apprenticeship to acquire my PEO level 2. Only doing lap, corner, fillet and butt joints. If we have time we are gonna also be doing a seam on a small pipe and around the pipe. It's pretty fun but pretty frustrating at first. Good video anyway.
MrStuartBowman in my first year class we had to O/A weld pipe together. Open root, thin wall black pipe. Then we pulled it apart length wise to see how the weld held.
Thank you so much for your videos, I just started with welding and it has help me a lot, specially this one, since today I started with gas welding and I was going crazy this morning. But now I have a clue for a new try tomorow.
I heard Victor brand torches actually should be shut off oxygen first according to manufacturer's recommendations, then acetylene. I started doing it that way and it avoids the pop.
Thanks! Wanted to see it done. Now I have, man it's slow. But most of the time old school is slow, that's why it's old school. No offense to anybody, one good thing is you can always fall back on it when nothing else works.
would it be better using cold rolled steel - i have always found cold rolled steel to be much cleaner to work with in all types of welding, the cost is a bit more but you save a lot of clean up time and usually have a better looking job assuming you get it right. Your videos are very informative
Am learning lots from your videos. My father bought an o/a torch when I was about 8 years old and showed me something about using it when I was about 10. I am 64 now and have taken it out of cold storage. I need to replace two o rings in the cuter torch but have everything else ready to go. Please tell me what is happening with gas welding using steel filler wire that we don't use flux. Thanks so much for your tutorials.
I always wondered why more welders don't bend their rods to keep the heat away from their rod hand glove. Worked good for me once I got the angles right and kept my hands from burning. Works good on overheads when things get tight.
You need just a hint of "harder" flame anf more travel speed.. also keep the tip of the filler rod in flame, colder area of the flame to protect it from oxygen. Harder flame and faster travel speed keeps the heat in tighter spot 😉
Oxy fuel t joint is the hardest joint to do. I noticed its very important to clean the steel really well. If its got mill scale or rust on it, its gonna run horrible. It sparkles and pops so it's pretty important to clean it. I notice sometimes its actually better to use a size tip smaller because having a bigger tip creates way too much heat and you'll sometimes end up undercutting the plates. You actually want to try to work with a slight harsh flame but not like a turbulating sound. Having a hotter puddle your at risk of overheating the joint and like i said it causes excessive undercut and the puddle gets too fluent and harder to control. Gets all the yellow oxides in the puddle. But t joints are a pain. I went back to oxy fuel welding and I'm trying to master the 2f t joint. But best thing is clean the steel really well, and watch the torch angles, its probobaly best to just straight out push the puddle forward and probably should avoid big oscillations.
now this is what I cut my teeth on, my teacher started me just like this and destroyed every tag I welded until I got it right. maybe this is why I like Tig better than Mig. I like both but I feel more comfortable with a tig torch.
In class for this process now. One point the course teaches is that it is sometimes necessary to use a slightly oxidizing flame for an inside fillet as there is less ambient O2 in the confined space. Is that your experience? Thanks.
I have to move my flame out of the puddle almost constantly or else I’ll burn through. I noticed you don’t really have to do that. Should I turn my gas down?
If that is a Victor torch, don't the charts say to use a #2 or #3 tip for 1/8"? That would be a lot more heat so things would have to go a lot faster. The outside joint went fine with the #0 tip.
Hi Bob from Australia another great video. Was just wondering would doing the inside fillet weld first be better. The inner fillet weld looked to be very flat/leaned over. Doesn't look like you have hearing protection on. Cheers for another great video regards John
John Largue A straight up fillet would be different. I'd have a bigger tip. A fillet into an outside corner with nothing there could be a bit heat sensitive. I don't have heating protection on. It doesn't bother me. Good points. Thanks for the feedback and support. Oy
Now don't want to be speaking for Bob, but I suspect that he does use hearing protection when there is damaging levels. Welding isn't that loud. I work in sound and have also done lots of shop work and for a lot of it I wear hearing protection, almost all powered wood working tools are in the damage range, but I don't wear hearing protection for welding, grinding yes.
beg to differ constant noise of any kind over extended periods of time will damage your hearing just as much as short very loud noises will but it is a choice for you to make same as any protection is. Be safe out there
Well it depends on the noise. High feq. can be damaging so maybe stick is loud enough, gas though? Very little high freq. content. Tig very quiet on DC, even Mig is hardly above cooking loudness. There are "old timers" in construction that don't use anything ever, but mostly their hearing is shot. I worked with painters once who were forced to wear dust masks. So they cut holes in them so they could smoke... In a absolute way you are probably right that any sound is going to do some damage over time but unless you are going to wear ear plugs 24/7 you are going to be exposed to some. I don't have OA but I can take some SPL levels on Tig and Stick. I can pretty much guarantee that they will be WAY below any OSHA levels requiring protection. I personally think their levels are too high, especially for short loud sounds. I'm willing to be surprised but I doubt that I will find levels that any medical body would say requires hearing protection. I have looked at this before (though not for welding) so I think I have a fairly good feel for it. But again worth looking at.
When you get that much pass thru wouldn't that be enough strength for that joint? Or would it matter the use of the project? Hope your understanding my question. Im totally new to welding.
Thanks Bob. Am an older carpenter and always found welding cool but never tried it, never had equipment. Recently got a used uniweld setup and am learning. You guys on utube are tops for teaching. Thanks so much for your instructive videos. Fun learning from pros. Thanks again.
Very interesting video. I learned a lot. Is there a way to remove Mill scale with out grinding? I'm building a weld table with a 4x8 sheet of 1/2" plate. Thanks Again for the video.
you know whats cool? you get to learn oxy-ace welding free if you choose to be a plumber in germany. its part of the vocational training. i love welding so much that i want to be a professional welder
oxy/propane is essentially the same. run a little higher oxygen pressure. where as oxy/ace generallu uses a 1:4 ratio of fuel to air, oxy/pro needs about 1:5. that means, if your oxy/acetylene pressure is 5/20 then oxy/pro should be closer to 5/25. another big "gotcha" is with acetylene, the heat is right on the edge of the inner cone; you touch your preheat cone to the work to heat it up. With propane, the heat is outside of the inner cone... I use about the length of the cone as a guage... if the inner cone is 1/8" in length, then to preheat the work, I keep the work 1/8" away from the inner cone. Hopefully it makes since what I"m describing.
Does putting the metal on your big metal table suck the heat out of the part? This is the 2nd video I've seen where you had trouble when the part was sitting on the table. I know how much fun it is to solder on PCBs with large copper planes.
Could you explain more about the rod selection for this type of welding, did it years ago. The person that was teaching me, was using the same rod for TIG. Is it the same rod?
Hey Bob ! Can't begin to tell you how much I've learned from just watching your videos specifically on this here you tube and many thanks to you sir, just have a safety question for you cus I'm bout to go n fill some oxy acct bottles to do some cutting (mind you I've learned everything I know up to date from you tube when it comes to tig mig and even stick welding and plasma cutting so I'm just now starting to venture into oxy acct cutting ) and just wondering during this here video I heard a snap or a pop when you were done welding was that because you cut off the fuel gas(acct) first? And should I turn off the oxy or the acct first when cutting. Or is there a difference between oxy acct welding and oxy acct cutting when it comes to what you shut off first? Thank you so much Bob. -derek
shoes121255 oxy acetylene is usually used with pretty much any steel filler rod. I know guys that have produced acceptable strength welds with coat hangers. Not ideal it is shows that if it is steel it works.
@@nickskokut6537 This has come up in other places, but the difference is that welding rod has deoxidizers in it, and coat hanger is just more steel. So, it's filler but it doesn't help the weld. I've used it and also good old baling wire which I think might be almost pure iron? It's very soft sometimes.
Hello Sir, just an offering of experience. I spend all my time welding oxy-acetylene for artistic purposes, pretty much all day every day... the only thing I noticed was your plate was resting on your bench on your first attempt which in essence makes it so you were attempting to weld .125 to .375 or what ever your bench thickness plus your weld plate may be. Your bench was acting as a heat sync, you didn't have nearly enough BTU's to get your puddle rolling. The impurities shouldn't have that much of an effect on your ability to run a puddle on 1/8th inch. As you adjusted your plate into the air off the bench, the problem went away immediately. For the most part you can cook off nearly all of the impurities while attempting to welding an 1/8th inch thick material unless it's extremely dirty. For the most part I find a quick scale cleaning with a wire brush is sufficient to get a weld zone clean with RG rod. One of my recent projects was using old material that had sat outside for almost 20 years and actually had extreme rust pitting on it that was used as an ornamental facing, naturally not all of the heavy rust deposits in the pits could be cleaned off. It was all welded with oxy-acetylene and it came out pretty darn good! The weld flame was favored into a slight carburizing feather to help with oxidation. As always, it's situational... just my two minutes of experience with the procedure! -Dan
Great video, one point is that I would have laid the torch down more so the flame pushes the pool forwards and reduces the heat at the tip and risk of blowback. Also, the wire scared me. Bend it over at the end, the loose end will fetch you eye out if it catches you. Agree with lifting it up, too much heat dissipating through the bench.
Please put requests for videos as a REPLY to this comment:
Bob which gas do you turn off 1st when you get pop back into the torch.
Hey could you give some tips for a 3g stickweld with a run in tab a run out tab and a backing strip?
sch. 10 or 40 Stainless steel pipe. There isn't any good arc shots of someone welding stainless steel pipe.
It's on our list.
Bob, I would like to see more about O/A pressures. What pressures to use for heating, what pressure to use for cutting, etc. Another thing i would like to see is how to set up a cutting torch for cutting through steel. I work at a scrapyard so knowing more about cutting through rusty truck frames, cutting 1" plate apart, etc etc would be awesome.
Love the videos!
This brings back a fond memory of mine. When I was about 14 years old I asked my Dad to teach me to weld (he welded in the oilfield and plants for 50 years.) He said fine drag the torch out. My comment was - I didn't want to do that teach me mig and tig. We argued for a while and he settled it saying - you know those planes from WWII you love to study, guess how they were built?? Answer - a housewife built them with oxygen and acetylene, now learn this and I'll teach you the rest. That settled it, I learned the torch and some (not all) of the rest. I'm convinced it made it all better starting here. I'm not a welder today but I still tinker when not playing entomologist around cotton fields in the US. He told me later he started working for Tennessee Gas welding and they required everything under 2" to be gas welded. Thanks for the videos.
Problems are far more informative than "everything looks fine." Knowing what to do when shit happens is a sign of an expert.
...Yeah...!!
Oxy acetylene was often the first process taught in welding classes back in the day (OIT). You learn to manipulate and direct heat to control the puddle. I still feel this is a good foundation to learn other processes.
Just started welding school a month ago. This is by far my favorite process. OAW just feels so meditative, just the sound of a steady flame as you gently push the puddle. Definitely a lot quieter then Stick, my ears hurt from the grinders and chipping hammers 🤣
Still the most versatile metal working tool in the shop. Correct psi is often overlooked. MORE A/O please. Like the split screen.
I don't weld much, and haven't tried it for years. Oxy-acetylene is all I have to do it with. I have a little welding that needs to be done, to fix a broken brace on a trailer. It looks like it got hit and broke off at the original weld. If I get enthusiastic and this one works well, I might do a lot more. These basic videos on how to set it up, what to watch for, how to do the weld, etc are very helpful! This little project doesn't have to be pretty, thank goodness. Just strong.
Sir I really want you to know how much I appreciate you taking the time to talk through a weld and not cut the film. It is immensely helpful. Thank you for these videos.
I love this guy. Reminds me of my dad, a true native Kansan. Straightforward, informative, not especially animated, but really knowledgeable.
Really appreciate this video. I'm learning o/a and really enjoying it. Purely a hobbyist, I need and enjoy the versatility that oxy-fuel offers. There aren't many YT videos that spend the time demonstrating and explaining like you did with this one. I identified several things that I'm NOT doing yet but will begin doing now that I've seen it done correctly. The process may be "old school" but I'm okay with that. It gets the job done without the multi thousand dollar investment of TIG and the longer learning curve that I may not live/work long enough to acquire.
Very useful video for me, as I used to have similar problems when doing TIG and Oxy A, and tended to try and keep going instead of stopping and re -assessing what was going wrong.
I learn something every time I watch Mr Moffat.
Pretty impressive how he keeps calm when it does not go right, I'd be cussing like a mule train driver.
thanks Bob for the great video, it's very much appreciated. I believe your were right on the O/A fillet weld. I think it's the hardest one to weld. Not as easy as the outside corner and the heat is always burning your rod holding hand and arm. Steve Bleile made a couple of good tips on his O/A video. Preheat a little bit in front the area to weld and it will be easy to get a puddle going quick. And keep the filler rod just close enough to the flame to keep it almost molten on the tip. When you dip it in the puddle, it won't cool the puddle down much as it was already molten hot. When you do that, it helps the weld to move along quicker as it is not cooling down as much. Once again, I'm glad you are doing the O/A vids for all of us. I really enjoyed them. Dan.
Thanks for the great way you explained the 3 different types of flames. Made more sense than any other way I've seen.
No problem, glad to help!
Hey could you give some tips for a 3g stickweld with a run in tab a run out tab and a backing strip?
Idaho Sagebrush he said old school love it off subject
Idaho Sagebrush one older than that kind of weld guess not mentioned
Idaho Sagebrush man has cool video
I enjoyed watching the gas welding. That is how I learned to weld in high school 50 years ago.
Isn't it great that you can use all the same technique and even the same TORCH today?
Thanks for actually showing the problems when they are happening and what one might do to correct them. I just need to remind my self that if its welding fine and then goes to crap. I should stop and try to figure out why and not plow on to the end. Its good oxy tips are short ..... less likely to close it in your tail gate or wrap in up in a fan like Bill did. ;)
...Yeah, hard to learn stuff when everything is ALWAYS going right....!
Thanks for the video. I find that you learn more from problems than things that go smoothly, but hardly anyone wants to show you they had a problem. It's great to see a pro work through a problem, it won't stick quite as well as me working through the problem but it's close!
Great work.
Thank you for a great gas welding video! I took welding /ag mechanics thru fours years of high school with 3 years of student teaching. I had three different teachers during that time and not one of them could do the type of gas welding I had taught myself. I've never done TIG welding or much of any wire feed welding at all. I've built headers for dirt bikes, exhaust systems for all kinds of trucks and would not have been able to do any of those projects if I had not learned this type of welding. Thanks again for a good video!
I learned gas before I learned TIG, I think everyone should, as you stated in the video TIG will be much easier to learn after learning to gas weld.
Excellent. Haven’t welded with gas in 35 years. Gonna give it a try again.
Love torch welding that's the very first thing I learned to do 28 years ago
Bob thanks for your informative style. You are a very good teacher. I am learning to weld and braze on my own and YT videos are my teachers.
excellent display of skill and coordination , just how i was taught in 1976 as an apprentice panel beater, just as you said in another video, New welders should start here, jumping straight in to MIG is great ,but if they learn this, then SIF Bronze welding , as i was told it was called, EG Brazing , i saw in a video this was used to join up the subframes on E TYPES AND D TYPES then electric arc, stick, then MIG, then TIG , and all it can do, i have mastered all, and still prefer to gas weld, with flux my alloy panels, before i wheel them, just so satisfying to do, love the videos, keep them up. Les
I have read many documents and watched even more videos, but you explanation about the gas welding process was the most enlightening work I have perused. While I certainly need more practice, I now have a better understanding of what to do. I am sure I well be rewatching this video many times.
That's what we like to hear Mike. Thanks for the support.
Very well done I have welded all my life with different welding processes but no gas welding thank you. I'm 53 but still learning
It's crazy to me how overlooked an oxy/acetylene setup is. It's so versatile. You can weld, braze, cut, forge (to a certain extent), and probably more. For what you pay, it might be the only tool you need to get started, especially for those that don't have access to the power required to run electric, or protection from the elements, like in your backyard, because you only have a tiny shed for storing your tools. There's a reason this older technology hasn't completely died out.
Bob, you are the instructor I never had. Thank you ( and the college ) for all your valuable time and knowledge. Please can we have some more Oxy/Acet videos, from basics through to advanced, as 'old school' is right where it's at for me ( and others). I work in a busy fab/engineering environment in the UK and we use multi processes from stick, Tig and flux core Mig but I love to 'play' with Oxy/Acet at the weekends. You deman, Bob. Keep it all coming. Thanks.
Im in APEX. And the segments go as followed Blueprint/theory, oxy/acetylene, SMAW, GMAW, GTAW and finally Advanced SMAW... I always watch your videos for tips to help me out when i run into a problem or if i want to try a new method i love the content please keep it coming much love from new york 🙏
I definately think it would help to elevate the piece, when you first attempted to weld the backside the welding table was likely acting like a chill block. I learned that one the hard way a time or two. Thanks again for this often overlooked material Bob.
Have not gas welded since high school. I am not a welder but find this process would be very handy on the farm. Thanks for the video. Also when starting welding I think this process is great to get too know how to control the puddle.
Great Videos Bob, We were told years ago to use white distilled vinegar to stop the flakes. Seems to work.
Of course back then we used clothes hangers as rod a lot of times. Keep up the great work.
Thank you for the split screen view! I appreciate seeing how you move as well as the weld.
Great technic! Learned a few pointers I'm going to try in my welding class. I'm loving Oxy/Acetylene welding and I can' t wait to get my own oxy/acetylene set. Thank you for all you do.
A trick I used on fillet welds was to leave a very small gap at the root. The flame could get at the toe much better and the puddle would flow easier.
I like the way you discussed the three flames. Can you make a video that goes into more detail in cutting with a torch and the three flames and usages?
At 16 min, talking about using the parent metal itself for filler: "Autogenous". Enjoyed this, have also found it difficult to use a torch on the inside corner like that. I once read something about this, that the filler wire was applied to the top edge of the fillet to sort of protect it and reduce that undercut, I never have done that. Now I can at least see what he was talking about. In its province, torch welding is a lot of fun, easy and good control. I'm thinking mostly very thin material, and also brazing and silver-soldering.
You, sir, are a good teacher. Thank you.
This was very informative. It showed me what I have been doing wrong for quite some time. Thanks.
Doing this as part of my 1st year apprenticeship to acquire my PEO level 2. Only doing lap, corner, fillet and butt joints. If we have time we are gonna also be doing a seam on a small pipe and around the pipe. It's pretty fun but pretty frustrating at first. Good video anyway.
MrStuartBowman in my first year class we had to O/A weld pipe together. Open root, thin wall black pipe. Then we pulled it apart length wise to see how the weld held.
Thank you so much for your videos, I just started with welding and it has help me a lot, specially this one, since today I started with gas welding and I was going crazy this morning. But now I have a clue for a new try tomorow.
Bill Dance, I have not heard that name in a while.
Thank you for sharing your knowledge.
patw52pb1 I used to crack up at some of his goofy bloopers.
I heard Victor brand torches actually should be shut off oxygen first according to manufacturer's recommendations, then acetylene. I started doing it that way and it avoids the pop.
I miss my teachers and my old bosses!
Thanks! Wanted to see it done. Now I have, man it's slow. But most of the time old school is slow, that's why it's old school. No offense to anybody, one good thing is you can always fall back on it when nothing else works.
would it be better using cold rolled steel - i have always found cold rolled steel to be much cleaner to work with in all types of welding, the cost is a bit more but you save a lot of clean up time and usually have a better looking job assuming you get it right.
Your videos are very informative
It would for sure. Thanks, good tip.
Am learning lots from your videos. My father bought an o/a torch when I was about 8 years old and showed me something about using it when I was about 10. I am 64 now and have taken it out of cold storage. I need to replace two o rings in the cuter torch but have everything else ready to go. Please tell me what is happening with gas welding using steel filler wire that we don't use flux. Thanks so much for your tutorials.
I always wondered why more welders don't bend their rods to keep the heat away from their rod hand glove. Worked good for me once I got the angles right and kept my hands from burning. Works good on overheads when things get tight.
You need just a hint of "harder" flame anf more travel speed.. also keep the tip of the filler rod in flame, colder area of the flame to protect it from oxygen. Harder flame and faster travel speed keeps the heat in tighter spot 😉
Oxy fuel t joint is the hardest joint to do. I noticed its very important to clean the steel really well. If its got mill scale or rust on it, its gonna run horrible. It sparkles and pops so it's pretty important to clean it. I notice sometimes its actually better to use a size tip smaller because having a bigger tip creates way too much heat and you'll sometimes end up undercutting the plates. You actually want to try to work with a slight harsh flame but not like a turbulating sound. Having a hotter puddle your at risk of overheating the joint and like i said it causes excessive undercut and the puddle gets too fluent and harder to control. Gets all the yellow oxides in the puddle. But t joints are a pain. I went back to oxy fuel welding and I'm trying to master the 2f t joint. But best thing is clean the steel really well, and watch the torch angles, its probobaly best to just straight out push the puddle forward and probably should avoid big oscillations.
....I recall when all the muffler shops in the 1960's did this.....with coat-hanger filler wire.....
now this is what I cut my teeth on, my teacher started me just like this and destroyed every tag I welded until I got it right. maybe this is why I like Tig better than Mig. I like both but I feel more comfortable with a tig torch.
I'd like to see a carbon arc demo. great welding video!
It's in the works.
Thanks!
In class for this process now. One point the course teaches is that it is sometimes necessary to use a slightly oxidizing flame for an inside fillet as there is less ambient O2 in the confined space. Is that your experience? Thanks.
!!! Hey, maybe that's it! Won't cost much to try.
I have to move my flame out of the puddle almost constantly or else I’ll burn through. I noticed you don’t really have to do that. Should I turn my gas down?
If that is a Victor torch, don't the charts say to use a #2 or #3 tip for 1/8"? That would be a lot more heat so things would have to go a lot faster. The outside joint went fine with the #0 tip.
For safety reasons always turn oxygen off before acetylene after you're done welding. If not you're at a higher risk of creating an explosion
Thanks great video ! My torch arrived today lol
Weird timing. I just decided to give this a try. Thanks!
Why do you get burn back? And how do you stop it from happening? This happened to me and I was flipping out! It blew off the regulator from the oxy.
Would the steel bench underneath the work not draw away heat ? Would a fire brick help insulate it?
Hi Bob from Australia another great video. Was just wondering would doing the inside fillet weld first be better. The inner fillet weld looked to be very flat/leaned over. Doesn't look like you have hearing protection on. Cheers for another great video regards John
John Largue A straight up fillet would be different. I'd have a bigger tip. A fillet into an outside corner with nothing there could be a bit heat sensitive.
I don't have heating protection on. It doesn't bother me. Good points. Thanks for the feedback and support. Oy
Now don't want to be speaking for Bob, but I suspect that he does use hearing protection when there is damaging levels. Welding isn't that loud. I work in sound and have also done lots of shop work and for a lot of it I wear hearing protection, almost all powered wood working tools are in the damage range, but I don't wear hearing protection for welding, grinding yes.
beg to differ constant noise of any kind over extended periods of time will damage your hearing just as much as short very loud noises will but it is a choice for you to make same as any protection is. Be safe out there
Well it depends on the noise. High feq. can be damaging so maybe stick is loud enough, gas though? Very little high freq. content. Tig very quiet on DC, even Mig is hardly above cooking loudness. There are "old timers" in construction that don't use anything ever, but mostly their hearing is shot. I worked with painters once who were forced to wear dust masks. So they cut holes in them so they could smoke...
In a absolute way you are probably right that any sound is going to do some damage over time but unless you are going to wear ear plugs 24/7 you are going to be exposed to some. I don't have OA but I can take some SPL levels on Tig and Stick. I can pretty much guarantee that they will be WAY below any OSHA levels requiring protection. I personally think their levels are too high, especially for short loud sounds. I'm willing to be surprised but I doubt that I will find levels that any medical body would say requires hearing protection. I have looked at this before (though not for welding) so I think I have a fairly good feel for it. But again worth looking at.
When you get that much pass thru wouldn't that be enough strength for that joint? Or would it matter the use of the project? Hope your understanding my question. Im totally new to welding.
Peter Ford It would be enough on this part.
Thanks Bob. Am an older carpenter and always found welding cool but never tried it, never had equipment. Recently got a used uniweld setup and am learning. You guys on utube are tops for teaching. Thanks so much for your instructive videos. Fun learning from pros. Thanks again.
Peter Ford Thanks for the feedback and support.
@@bobmoffatt4133 That's what I was thinking! "Good fusion, good bead, good penetration", that is welded as far as I can tell!
Wow, very helpful. Thank you!
Thanks, learned a lot!
This is helpful. Thanks.
Very interesting video. I learned a lot. Is there a way to remove Mill scale with out grinding? I'm building a weld table with a 4x8 sheet of 1/2" plate.
Thanks Again for the video.
Look up pickling metal. That's the only other way I know of.
Grinding/sanding is the fastest way by far.
Bead blasting, bucket of water with sulfuric or hydrochloric acid?
this may sound stupid but I'm dyslexic and would it make a difference to marking out and peeping for welding and doing the welding?
Hi Bob, Have you ever used bailing wire for filler wire with oxy/acet.? Would it make a strong weld? Thanks, Donald
I have used bailing wire. It is not as strong.
I've used coat hangers many times.
you know whats cool? you get to learn oxy-ace welding free if you choose to be a plumber in germany. its part of the vocational training. i love welding so much that i want to be a professional welder
have you ever used propane and oxy to cut or weld with? if so what is your take on it?
oxy/propane is essentially the same. run a little higher oxygen pressure. where as oxy/ace generallu uses a 1:4 ratio of fuel to air, oxy/pro needs about 1:5. that means, if your oxy/acetylene pressure is 5/20 then oxy/pro should be closer to 5/25. another big "gotcha" is with acetylene, the heat is right on the edge of the inner cone; you touch your preheat cone to the work to heat it up. With propane, the heat is outside of the inner cone... I use about the length of the cone as a guage... if the inner cone is 1/8" in length, then to preheat the work, I keep the work 1/8" away from the inner cone. Hopefully it makes since what I"m describing.
Does putting the metal on your big metal table suck the heat out of the part? This is the 2nd video I've seen where you had trouble when the part was sitting on the table. I know how much fun it is to solder on PCBs with large copper planes.
good tip about grinding that flake off first
Could you explain more about the rod selection for this type of welding, did it years ago. The person that was teaching me, was using the same rod for TIG. Is it the same rod?
What I would like to know is what causes the metal to pop or explode while you are welding. Contamination?
Can you use a lay wire technique on outside corners?--on fillet welds?
Hey Bob ! Can't begin to tell you how much I've learned from just watching your videos specifically on this here you tube and many thanks to you sir, just have a safety question for you cus I'm bout to go n fill some oxy acct bottles to do some cutting (mind you I've learned everything I know up to date from you tube when it comes to tig mig and even stick welding and plasma cutting so I'm just now starting to venture into oxy acct cutting ) and just wondering during this here video I heard a snap or a pop when you were done welding was that because you cut off the fuel gas(acct) first? And should I turn off the oxy or the acct first when cutting. Or is there a difference between oxy acct welding and oxy acct cutting when it comes to what you shut off first? Thank you so much Bob.
-derek
Is gas welding specific filler rod needed or can you use ER70S-2 or similar tig filler rod?
shoes121255 I personally like RG60
shoes121255 oxy acetylene is usually used with pretty much any steel filler rod. I know guys that have produced acceptable strength welds with coat hangers. Not ideal it is shows that if it is steel it works.
@@nickskokut6537 This has come up in other places, but the difference is that welding rod has deoxidizers in it, and coat hanger is just more steel. So, it's filler but it doesn't help the weld. I've used it and also good old baling wire which I think might be almost pure iron? It's very soft sometimes.
Are those 110v or 220v bottles? Dual voltage?
How about doing a 3G weld is it still the same technical skills needed for that kind of weld?
Brazing welding still cool
What's the holes in the table for ? And what are those bars you stick into them ?
Could you do some overhead oxy welding
could you show proper technique for oxy welding 2" schedule 40 pipe? Thanks
Hello Sir, just an offering of experience. I spend all my time welding oxy-acetylene for artistic purposes, pretty much all day every day... the only thing I noticed was your plate was resting on your bench on your first attempt which in essence makes it so you were attempting to weld .125 to .375 or what ever your bench thickness plus your weld plate may be. Your bench was acting as a heat sync, you didn't have nearly enough BTU's to get your puddle rolling. The impurities shouldn't have that much of an effect on your ability to run a puddle on 1/8th inch. As you adjusted your plate into the air off the bench, the problem went away immediately. For the most part you can cook off nearly all of the impurities while attempting to welding an 1/8th inch thick material unless it's extremely dirty. For the most part I find a quick scale cleaning with a wire brush is sufficient to get a weld zone clean with RG rod. One of my recent projects was using old material that had sat outside for almost 20 years and actually had extreme rust pitting on it that was used as an ornamental facing, naturally not all of the heavy rust deposits in the pits could be cleaned off. It was all welded with oxy-acetylene and it came out pretty darn good! The weld flame was favored into a slight carburizing feather to help with oxidation. As always, it's situational... just my two minutes of experience with the procedure! -Dan
Learning about this stuff.. I can't figure out why my welds aren't sticking. Guess I need a bigger cleaned off area. hmm..
The only gas welding rods i have are rusty wire flag markers and coat hangers
I still love using oxy acetylene welding and try to find any excuse to use it.
Well how do you get coverage for the oxidation of your weld?
Can you do a video on oxy welding aluminum
thanks for very understanding video
Hey can we have more Oxy acetylene videos please I’m just starting and it’s the type of welding I’m doing!!im starting corner welds!!!
Hope Bob is good...haven't seen him in awhile.
Cool video
Wire feed welding
Can you use tig filler rod for gas welding or just metal coat hangers.
James Acker
1 day ago
Can you use tig filler rod for gas welding or just metal coat hangers.
Yes, yes you can. Can also use sections of solid MIG wire if need be too
Do they still have Arka-la -la there? Great videos, by the way!
14:35... "Buttholes" lol... I'm a new welder and I never heard that term before (as it pertains here) but I know exactly what he means
Bob can you please do a video on 11018M wps
We'll add it to the list.
Do you clean the rod and if you white what
Bob are u near Wichita?
Great video, one point is that I would have laid the torch down more so the flame pushes the pool forwards and reduces the heat at the tip and risk of blowback. Also, the wire scared me. Bend it over at the end, the loose end will fetch you eye out if it catches you. Agree with lifting it up, too much heat dissipating through the bench.