This is the best video on RUclips on Acetylene & Oxygen Torch Cutting. Yes, I did watch them all. I would have loved a comment or two more about achieving a neutral flame.
Thank you so much! I'm a first semester sculpture student working with metal welding and for the life of me, I can never remember how to set up or shut down down the torch. My instructor goes through it so damn fast. You're a great help!
Nice video. Thanks for making it so concise and direct. If you weren't a shop teacher at some point, you should have been... Too many RUclips videos are verbose and "stream-of-consciousness" BS and that it is why it is SO refreshing to see you being "old school". Again - thanks for the video. I'm now in the market for a torch. LOL
5. Shutting down the oxy fuel gas welder a. First close the acetylene torch valve, then close the oxygen valve. Closing the acetylene valve first reduces the chance of allowing unburned fuel gas to escape and be ignited accidentally. b. First close both cylinder valves, then open the acetylene and oxygen valves on the torch body, one at a time. Allow the gas in each line to escape and see the line pressures go to zero on the regulator gauge. c. Close the acetylene and oxygen torch valves after the gas in each line has been released. This is to prevent the reverse flow of gas into an opposite line. d. Release the line pressure-adjusting screws on the acetylene and oxygen regulators.
The manual that came with my Victor torch says to close oxygen first, explaining that if you turn off fuel first, you can get a backfire, that popping sound, witch sends soot back though the torch witch can effectually clog the arrestors and check valve. The school I went to for welding also taught oxy first. Not sure what your talking about with "unburned fuel" reigniting, if your flame goes out when you turn off the oxygen, you clearly doing something wrong. I'm sure you'll say you've been doing it your way for years and never had a problem, but I've been doing it the way I've been taught for over 20 years and no problems either, just do what your manual says I guess....
This is old, BUT the A/O debate is fiercely contested, but i've actually put my life and limb to test what is proper. Heres my scientific findings after 10 years of working with acetylene cutting: 1. It depends on the manufacturer, and if it's a Tip Mix or Body Mix torch, one mixes the gasses at the tip, the other at the body. 2. Body Mixes are more susceptible to Backfires, Backfires CAN cause a flashback. A backfire is basically when the Acetylene can't sustain itself in the atmosphere and pops out. If you want to do a controlled backfire, just turn the acetylene down all the way but not shut, it'll pop itself out. OR add more oxygen than acetylene and it'll pop itself out because it can't sustain itself. The third, is if your seals are bad, a lingering flame will continue burning at the very tip of the torch head and again, pop after a couple seconds. NOW heres the scientific part. A backfire almost ALWAYS sends soot back up into the torch, why is this bad? Because Backfires can cause Flashbacks by blocking your seals from closing. Turning off Oxygen then Acetylene also can tell you if your Acetylene seal is bad on the torch I.E the lingering flame I talked about earlier. If your seals have gone bad, then they arent closing properly and will allow for the gas to flowback into the line. Most torches are designed to stop minimal backfires at the seals, but again that damages them and can clog them with soot. SO, scientifically? It should always be O then A for you're own safety and recognizing when your torch has gone bad easily, because Oxygen isnt flammable but Acetylene is and i'd rather make sure everything with the highly flammable gas that self ignites at 15 PSI is safe and workable. But reality is more complicated, and you should ALWAYS trust the torch manufacturer instead of some yahoo 50 year old with 90 years of experience with your life and safety.
I just wish Smith/Miller had kept making videos. Most of this stuff I learned in metal shop class in high school. But some of it was new to me and some of it I had misplaced. High School was more than 15 years ago. When I was in school the procedure for lighting a torch was acet and o2 on light and adjust. Guess things have changed. I will have to update my technique. Also as a basic intro he should have mentioned acet has a very low max psig and it can never be exceed. Well unless you want an ear shattering kaboom. Thats the kind of info I like to have. Over all though good video.
I noticed he adjusted the pressures to the torch with the torch valves closed. you need the valves at the torch open to set the pressure. also you should turn off the gas first then the oxygen. the gas valve should only be opened 1/4 turn for fast shut off if needed. and the reason you open the oxygen all the way is to backseat the valve so oxygen don't leak out past the valve stem.
I was told by the person at Oxy GAS where I bought the torch set to install the flashback arristors at the regulator , not the torch , as you did on your show , who's right ?
Please do some oxy-acetylene welding instruction videos! It would help sell more torches if there were some good training videos people could get. The safety videos are great and very professional but we need some high quality training for welding if you want people to buy something besides a cutting torch.
So to start using the torch you turn on the oxygen first and them the acetylene and to turn it off the acetylene first ajd then tje oxygen can someone tell me i got a test to take not really familiar with torch just want to make sure everyone seems to have a different opinion/answer.
good vid , more emphasis on acet cylindr not being turned on all the way , half a turn or so is plenty , so it can be shut off quickly if needs be ,,, bit more detail about the neutral flame setting would have been good too , but all in all , a good vid
you cannot attach the acetylene regulator to the oxy cylander because they are threaded different... this is because the acetylene regulator isnt built to withstand the pressure that an oxy regulator does.. as for connecting the hoses to the torch there is or should be markings telling you which hose goes where
He needed to demonstrate one of the antics of the high school shop class clown: Releasing acetylene into the trash can, then igniting it. After Mr. Roth's ears stopped ringing, he'd dismiss the entire class with a strong rebuke.
The acetylene valve only needs to opened 1 and a half turn and then you run them on .5 acetylene and 40 oxygen that's what I do but if I'm cutting bigger pieces of metal I used 50 or 60 oxygen and 6 acetylene
work handed me the oxy cutter, told me what the knobs do, then they left me with a giant pile of scrap metal to cut. I was scared because i didn't know what the hell to do then the oxy tanks were all empty, least now ill know what to do.
Although he corrected himself, he wasn’t wrong to refer to the acetylene side as the “fuel side”. Technically, oxygen is NOT a fuel, it is an oxidizer (as you can see the word comes from the word “oxygen”). For a flame you need heat, fuel, and oxygen, right?
+Kid Slade16 you are usually touching your torch to the surface your cutting is why it is popping or your cutting too slow. whoever said your doing nothing wrong is full of shit.when I was apprentice iron worker I popped all the time now I never pop cause I know what I'm doing
Always strange how on shut down, one instructor shuts down the oxygen first and another says fuel first. Sure is difficult as a beginner to know which is safest.
Always shut the fuel off first. Oxygen does not ignite. Acetylene can be lit from red hot metal recently cut or welded. If you are cutting and the torch goes out you can relight it from the very material you were just cutting. Oxygen is only an accelerant in a torch. Only crack the acetylene tank. If a problem arises, a half turn can shut it off. And always wear dark lenses (shade 5). It will very quickly ruin your eyes. otherwise.
Great video, but he didn't set his pressures dynamic and he turned the oxygen off first. Turn off the fuel first and the oxygen second so the oxygen will blow the fuel out of the line, ensuring that the flame isn't still alive in the torch itself. By dynamic I mean that your gauges should be set with what you're working with, i.e, having the torch open instead of being static and closed.
No, you are incorrect. The American Welding Society changed the procedure many years ago due to torch pop. Fuel on first, then oxy. Oxy off first, then fuel. You should study up on the entire welding process.
MasterHustler So, what is wrong with 'Torch Pop'? Is that dangerous?? And you're saying the correct way is to extinguish the Oxy first and then the Acetylene? That's the way I've always done it (and my handbook says to do it the other way round) Also, I've been like this fella, I've always set my gauges 'static', however, I've always wondered about this... maybe I should set my gauges with the torch valves open?
You can find it written both ways in current text books. Some say turn off acetylene first, others say oxygen first. Turning off acetylene first prevents flame from entering the torch (pipe bomb!), while turning the oxygen off first prevents torch pop and possible soot build up in the torch. Personally, in 20 years of welding I have never heard of anyone blowing up either way. My advice is to just make sure you turn it off, I've seen torches left half on more than once.
Неучи!!!!!!!!! Всегда(будь то это горелка или резак) сначала закрывается горючий газ, а потом только кислород!!!! Если сделать наоборот, то получится хлопок или обратный удар.
When I do that by accident I usually get that really loud snap. Ever since I was young it was always O2 first then the gas. Newer systems might be different though im not sure.
This guy is the Joe Friday of Acetylene & Oxygen Torch Cutting. Thank you.
holy shop teacher. this guy's awesome.he should have his own tv show
This is the best video on RUclips on Acetylene & Oxygen Torch Cutting. Yes, I did watch them all. I would have loved a comment or two more about achieving a neutral flame.
It’s in another of his videos.
Have to agree with Mark's comments - one of the best on the subject with emphasis on safe procedure's!
Thank you so much! I'm a first semester sculpture student working with metal welding and for the life of me, I can never remember how to set up or shut down down the torch. My instructor goes through it so damn fast. You're a great help!
Still the best video . Thank you
really appreciated the professionalism ill be watching all of your videos
A very nice and comprehensive demonstration indeed. Thank you.
Excellent! Clear and concise. Thank You.
thank you...you make this very clear.....need to make some cuts...havent done so in 20 years...needed a refresher..thanks again.
Thanks so much reminds me of shop class way back! I needed a refresher!
Nice video. Thanks for making it so concise and direct. If you weren't a shop teacher at some point, you should have been...
Too many RUclips videos are verbose and "stream-of-consciousness" BS and that it is why it is SO refreshing to see you being "old school".
Again - thanks for the video. I'm now in the market for a torch. LOL
this is a very good instructional i used it to review for my class
5. Shutting down the oxy fuel gas welder
a. First close the acetylene torch valve, then close the oxygen valve. Closing the acetylene valve first reduces the chance of allowing unburned fuel gas to escape and be ignited accidentally.
b. First close both cylinder valves, then open the acetylene and oxygen valves on the torch body, one at a time. Allow the gas in each line to escape and see the line pressures go to zero on the regulator gauge.
c. Close the acetylene and oxygen torch valves after the gas in each line has been released. This is to prevent the reverse flow of gas into an opposite line.
d. Release the line pressure-adjusting screws on the acetylene and oxygen regulators.
The manual that came with my Victor torch says to close oxygen first, explaining that if you turn off fuel first, you can get a backfire, that popping sound, witch sends soot back though the torch witch can effectually clog the arrestors and check valve. The school I went to for welding also taught oxy first. Not sure what your talking about with "unburned fuel" reigniting, if your flame goes out when you turn off the oxygen, you clearly doing something wrong. I'm sure you'll say you've been doing it your way for years and never had a problem, but I've been doing it the way I've been taught for over 20 years and no problems either, just do what your manual says I guess....
Checked your RUclips channel. Didn’t find your welding instructional videos. Still waiting...
Red before green, or you won't be seen.
This is old, BUT the A/O debate is fiercely contested, but i've actually put my life and limb to test what is proper.
Heres my scientific findings after 10 years of working with acetylene cutting:
1. It depends on the manufacturer, and if it's a Tip Mix or Body Mix torch, one mixes the gasses at the tip, the other at the body.
2. Body Mixes are more susceptible to Backfires, Backfires CAN cause a flashback. A backfire is basically when the Acetylene can't sustain itself in the atmosphere and pops out. If you want to do a controlled backfire, just turn the acetylene down all the way but not shut, it'll pop itself out. OR add more oxygen than acetylene and it'll pop itself out because it can't sustain itself. The third, is if your seals are bad, a lingering flame will continue burning at the very tip of the torch head and again, pop after a couple seconds.
NOW heres the scientific part.
A backfire almost ALWAYS sends soot back up into the torch, why is this bad? Because Backfires can cause Flashbacks by blocking your seals from closing.
Turning off Oxygen then Acetylene also can tell you if your Acetylene seal is bad on the torch I.E the lingering flame I talked about earlier.
If your seals have gone bad, then they arent closing properly and will allow for the gas to flowback into the line.
Most torches are designed to stop minimal backfires at the seals, but again that damages them and can clog them with soot.
SO, scientifically? It should always be O then A for you're own safety and recognizing when your torch has gone bad easily, because Oxygen isnt flammable but Acetylene is and i'd rather make sure everything with the highly flammable gas that self ignites at 15 PSI is safe and workable.
But reality is more complicated, and you should ALWAYS trust the torch manufacturer instead of some yahoo 50 year old with 90 years of experience with your life and safety.
Yep
Great video Jodi. Thank you
Thank you for the video I had no idea what the mixture was
I just wish Smith/Miller had kept making videos. Most of this stuff I learned in metal shop class in high school. But some of it was new to me and some of it I had misplaced. High School was more than 15 years ago. When I was in school the procedure for lighting a torch was acet and o2 on light and adjust. Guess things have changed. I will have to update my technique. Also as a basic intro he should have mentioned acet has a very low max psig and it can never be exceed. Well unless you want an ear shattering kaboom. Thats the kind of info I like to have.
Over all though good video.
Outstanding video, thank you for the information!
It was so helpful. Thanks smith
million dollar voice!
Thank Marlboro for that. ;)
Great Video best i've seen yet.
this is a really good instructional
Very informative, thank you!
Great advice! Thankyou !
Great video learned a lot. Please make one on heating tips
Good video!!!
brilian man thanks
I noticed he adjusted the pressures to the torch with the torch valves closed. you need the valves at the torch open to set the pressure. also you should turn off the gas first then the oxygen. the gas valve should only be opened 1/4 turn for fast shut off if needed. and the reason you open the oxygen all the way is to backseat the valve so oxygen don't leak out past the valve stem.
Great instructional video. I really like the emphasis on safety.
Great teacher
Oh very good, now I'll be able to cut oranges at the shop he he.
Quite the voice you've got there. Ever consider doing radio?
I did radio for years. He can make more money doing instructional videos like this.
He sounds like the guy that used to do the aviation oxygen acetylene welding videos
what causes the metal to weld itself back together behind the cut?
I was told by the person at Oxy GAS where I bought the torch set to install the flashback arristors at the regulator , not the torch , as you did on your show , who's right ?
Please do some oxy-acetylene welding instruction videos! It would help sell more torches if there were some good training videos people could get. The safety videos are great and very professional but we need some high quality training for welding if you want people to buy something besides a cutting torch.
So to start using the torch you turn on the oxygen first and them the acetylene and to turn it off the acetylene first ajd then tje oxygen can someone tell me i got a test to take not really familiar with torch just want to make sure everyone seems to have a different opinion/answer.
good safety procedure while cutting metals
good vid , more emphasis on acet cylindr not being turned on all the way , half a turn or so is plenty , so it can be shut off quickly if needs be ,,, bit more detail about the neutral flame setting would have been good too , but all in all , a good vid
wut happaned to A before O??!??!?!?! The other smith video they showed us said open and close A before O all day, everyday...!
why not blow off dust from the acetylene tank as well (in the same manner that you did with the Oxygen tank)?
you cannot attach the acetylene regulator to the oxy cylander because they are threaded different... this is because the acetylene regulator isnt built to withstand the pressure that an oxy regulator does.. as for connecting the hoses to the torch there is or should be markings telling you which hose goes where
He needed to demonstrate one of the antics of the high school shop class clown: Releasing acetylene into the trash can, then igniting it. After Mr. Roth's ears stopped ringing, he'd dismiss the entire class with a strong rebuke.
one treads clock wise the other is counter clock wise so you can't mess them up
Thank you for this video ...sound is very low
I want to work like that work
The acetylene valve only needs to opened 1 and a half turn and then you run them on .5 acetylene and 40 oxygen that's what I do but if I'm cutting bigger pieces of metal I used 50 or 60 oxygen and 6 acetylene
work handed me the oxy cutter, told me what the knobs do, then they left me with a giant pile of scrap metal to cut. I was scared because i didn't know what the hell to do then the oxy tanks were all empty, least now ill know what to do.
thanks for the video
It's an ok vid, a wee bit lazy though, could benefit seeing a 'Macro' on the items as you mention them, eg, gauges, knobs, neutral flame etc.
It’s in another of his videos.
red, green, green red, and thats how you work the oxy-acetylene tank
Or is it “Green, red, red, green, and that’s how you work the oxy-acetylene”? 🤔
🤣🤣,, щас, я каждый день буду все стыки проверять мыльной водой)
Although he corrected himself, he wasn’t wrong to refer to the acetylene side as the “fuel side”. Technically, oxygen is NOT a fuel, it is an oxidizer (as you can see the word comes from the word “oxygen”). For a flame you need heat, fuel, and oxygen, right?
when your torch keeps on making a popping noise what am I doing wrong
when my torch makes a popping noise what am I doing wrong
+Richard Kaiser nothing
+Kid Slade16 you are usually touching your torch to the surface your cutting is why it is popping or your cutting too slow. whoever said your doing nothing wrong is full of shit.when I was apprentice iron worker I popped all the time now I never pop cause I know what I'm doing
I didn't see the needles go to zero
Dan Aykroyd all the way.
И вообще наименьшее расстояние рамповой установки до горелки не менее 5 метров!!!!
Always strange how on shut down, one instructor shuts down the oxygen first and another says fuel first. Sure is difficult as a beginner to know which is safest.
Peter Ford remember always fuel first. You turn on fuel first you shut off fuel first.
Always shut the fuel off first. Oxygen does not ignite. Acetylene can be lit from red hot metal recently cut or welded. If you are cutting and the torch goes out you can relight it from the very material you were just cutting. Oxygen is only an accelerant in a torch. Only crack the acetylene tank. If a problem arises, a half turn can shut it off. And always wear dark lenses (shade 5). It will very quickly ruin your eyes. otherwise.
what the heck am i doing here, i don't even have oxygen torch
Always turn off fuel first. He did it wrong.
Checked your channel. Didn’t see your welding instructional video. Still waiting...
Great video, but he didn't set his pressures dynamic and he turned the oxygen off first. Turn off the fuel first and the oxygen second so the oxygen will blow the fuel out of the line, ensuring that the flame isn't still alive in the torch itself. By dynamic I mean that your gauges should be set with what you're working with, i.e, having the torch open instead of being static and closed.
Hmm good points. Thnx
UMMM.... A before O or up we go.
Always turn off Aceteilne before Oxygen... Your just lucky you had flashback arrestors.
No, you are incorrect. The American Welding Society changed the procedure many years ago due to torch pop. Fuel on first, then oxy. Oxy off first, then fuel. You should study up on the entire welding process.
MasterHustler So, what is wrong with 'Torch Pop'? Is that dangerous?? And you're saying the correct way is to extinguish the Oxy first and then the Acetylene? That's the way I've always done it (and my handbook says to do it the other way round) Also, I've been like this fella, I've always set my gauges 'static', however, I've always wondered about this... maybe I should set my gauges with the torch valves open?
SeriousSchitt I do A before O I've never had torch pop
You can find it written both ways in current text books. Some say turn off acetylene first, others say oxygen first. Turning off acetylene first prevents flame from entering the torch (pipe bomb!), while turning the oxygen off first prevents torch pop and possible soot build up in the torch. Personally, in 20 years of welding I have never heard of anyone blowing up either way. My advice is to just make sure you turn it off, I've seen torches left half on more than once.
Неучи!!!!!!!!! Всегда(будь то это горелка или резак) сначала закрывается горючий газ, а потом только кислород!!!! Если сделать наоборот, то получится хлопок или обратный удар.
Это если ты просто закрываешь,,,а когда реальная обратка вьебала только кислый сперва закрывается!
Tell him to slow down then.
The cylinder tap only needs to be opened about half a turn if that - what is this "all the way" bullshit?????
I was told newer O2 tanks didn't have to be opened all the way so I tested it with LeakTec and lo and behold it DID leak until I open it all the way!
your wrong you turn off the fuel first and the flame instantly goes out. never oxygen first!!! trust me I'm an ironworker
except your wrong because he works for the company that makes this shit and the instructors at college will also tell you oxygen first then fuel off
he knows his shit man believe him
When I do that by accident I usually get that really loud snap. Ever since I was young it was always O2 first then the gas. Newer systems might be different though im not sure.
A before O
and you never explode