How to cut with oxy

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Okay I do I set up a oxy torch to cut?I have three knobs.I have my oxgen set at about 25 psiand my oxy at 7psi..I was told to "get itsounding like a freight train" I think I got that but it doesn't cut just heats.
Reply:pyro, please do some reasearch before you hurt yourself.Oxy fuel rigs are actually quite dangerous. Don't be a dumbass.
Reply:LOL..I wondered what that flash over Florida was...
Reply:Originally Posted by daddypyro, please do some reasearch before you hurt yourself.Oxy fuel rigs are actually quite dangerous. Don't be a dumbass.
Reply:For cutting is 25psi oxyen7 psi oxy good enough?I am cutting 1/8" steel.
Reply:To start with what brand of torch do you have?  Tip size?  Material thickness?   I generally run my oxy at about 40psi, and acetylene at 10.  Turn on the acetylene slightly and light the flame turn open the valve until the flame just just jumps off the tip, and then turn it back slowly until it just is touching.  Then open the oxygen valve and then slowly open the oxy valve on the cutting attachment until you get a neutral flame.  After the flame is set preheat the metal until it starts to cut, and slowly move the torch with the tip angle slightly in the direction of travel.  Pictures would help greatly, but we really need alot more information before we know what problem you may be having.I'm a Lover, Fighter, Wild horse Rider, and a pretty good welding man......
Reply:Your settings are fine, preheat until it is yellow, and then put the oxy to it. The oxy knob at the base of the torch needs to be all the way open so when you trigger, the cut stream you have enough available to cut.Fine adjust so that you have nice sharp points on the pre-heat flames, and when you squeeze the oxy trigger it sounds like you are ripping paper, and does not mess up the pre-heat flame too much.
Reply:Originally Posted by daddyYour settings are fine, preheat until it is yellow, and then put the oxy to it. The oxy knob at the base of the torch needs to be all the way open so when you trigger, the cut stream you have enough available to cut.Fine adjust so that you have nice sharp points on the pre-heat flames, and when you squeeze the oxy trigger it sounds like you are ripping paper, and does not mess up the pre-heat flame too much.
Reply:On thinner material you need to angle the flame toward the direction of cut and move at the right speed. ( probably faster ) What about the tip?    Is it clean ?   A dirty messed up tip will make you very unhappy.
Reply:If the molten metal is welding back together, you may be moving to slow for the size tip you have.  For 1/8" steel you need a #00 and nothing bigger than a #0.  Anything bigger and it heats up to fast and you really have to move along.  Try making sure your tips is the right size for the work.OAdoctorwww.regulatortorchrepair.com
Reply:Originally Posted by daddyOn thinner material you need to angle the flame toward the direction of cut and move at the right speed. ( probably faster ) What about the tip?    Is it clean ?   A dirty messed up tip will make you very unhappy.
Reply:This whole exercise sounds like it has the potential for a disaster.Pyro,Ox/Ace is not something you just go out and "play with".  There are basic rules which MUST be followed to use the equipment safely.  Everything I've read leads me to believe that you haven't even read the manual which should have come with your equipment.First thing that comes to mind is the fact that you've gone directly to cutting vs welding/brazing.  How large is the acetylene bottle?  If it's one of those little "pony bottles" you're pulling way too much acetylene and are setting yourself up to trash the regulator at best and cause an explosion at worst.This is a DAMN scary post.  Finish your moving and read up on the safe use of ox/ace before you kill/hurt yourself and those around you.Syncro 250 DX Dynasty 200 DXMM 251 w/30A SG XMT 304 w/714 Feeder & Optima PulserHH187Dialarc 250 AC/DCHypertherm PM 1250Smith, Harris, Victor O/ASmith and Thermco Gas MixersAccess to a full fab shop with CNC Plasma, Water Jet, etc.
Reply:Originally Posted by SundownIIIThis whole exercise sounds like it has the potential for a disaster.Pyro,Ox/Ace is not something you just go out and "play with".  There are basic rules which MUST be followed to use the equipment safely.  Everything I've read leads me to believe that you haven't even read the manual which should have come with your equipment.First thing that comes to mind is the fact that you've gone directly to cutting vs welding/brazing.  How large is the acetylene bottle?  If it's one of those little "pony bottles" you're pulling way too much acetylene and are setting yourself up to trash the regulator at best and cause an explosion at worst.This is a DAMN scary post.  Finish your moving and read up on the safe use of ox/ace before you kill/hurt yourself and those around you.
Reply:Also, I didn't go directly to cutting I bought a rose bud and did that yesterday.
Reply:what did you "do" with the rosebud? a rosebud requires the highest acetylene flow of all tips and you can quite easily exceed the safe acetylene flow rate and have a problem..in general on cutting a 5:1 or 6:1 ox:acet ratio works good.(like 30 psi ox and 6 psi acet).. but learn to adjust  it as hammack descfribes it..you cannot simply set it with gauges.use the tip cleaner but not as a reamer..carefully find the largest tip that you can work into the hole without getting it stuck,,just push(hold it near the tip or you'll bent it)   dont twist and ream..beginners screw up tips real easy, and then they are srcewed because it cannot cut right and they get all frustrated..when, not if, it POPPS close the acet knob, thenthe ox knob, then change pants...maybe socks too...
Reply:Good luck.http://www.esabna.com/EUWeb/OXY_handbook/589oxy1_1.htmEd Conleyhttp://www.screamingbroccoli.com/MM252MM211 (Sold)Passport Plus & Spool gunLincoln SP135 Plus- (Gone to a good home)Klutch 120v Plasma cutterSO 2020 benderBeer in the fridge
Reply:Pyro,Not trying to be an A$$HOLE here but it sounds like you're auditioning for the"DUMB and DUMBER" show.You're dealing with equipment that will KILL you if you handle it improperly.The comment about using a ROSEBUD yesterday just confirms that.  Your question about where to buy an extension cord for a welder (another post) just confirms that you don't have a clue what you're doing.STOP before somebody gets hurt.  Do some basic study on welding (Arc and Ox/Ace) before you proceed.  Some of the "guidance" you'll get on this message board is flat wrong and borderline stupid.Just as a primer.  An 80 Cu Ft. bottle of acetylene is a SMALL BOTTLE.  Only very small cutting tips can be used with a bottle this size.  VERY FEW rosebuds can be used safely with this size cylinder.  The industry standard "draw rate" which was used for years was 1/7th (now this has changed to 1/10th) of the bottle capacity.  This means that the MAXIMUM flow rate from an 80 Cu Ft bottle is 1/7th of 80 or 11.4 Cu Ft/Hr.  Any Smith (as an example) cutting tip larger than a #2 exceeds that rate.  ALL their rosebuds exceed that rate (in fact the smallest rosebud uses 29 SCFH).Your comments/responses are just flat out STUPID.Syncro 250 DX Dynasty 200 DXMM 251 w/30A SG XMT 304 w/714 Feeder & Optima PulserHH187Dialarc 250 AC/DCHypertherm PM 1250Smith, Harris, Victor O/ASmith and Thermco Gas MixersAccess to a full fab shop with CNC Plasma, Water Jet, etc.
Reply:Originally Posted by weldbeadwhat did you "do" with the rosebud? a rosebud requires the highest acetylene flow of all tips and you can quite easily exceed the safe acetylene flow rate and have a problem..in general on cutting a 5:1 or 6:1 ox:acet ratio works good.(like 30 psi ox and 6 psi acet).. but learn to adjust  it as hammack descfribes it..you cannot simply set it with gauges.use the tip cleaner but not as a reamer..carefully find the largest tip that you can work into the hole without getting it stuck,,just push(hold it near the tip or you'll bent it)   dont twist and ream..beginners screw up tips real easy, and then they are srcewed because it cannot cut right and they get all frustrated..when, not if, it POPPS close the acet knob, thenthe ox knob, then change pants...maybe socks too...
Reply:Originally Posted by SundownIIIJust as a primer.  An 80 Cu Ft. bottle of acetylene is a SMALL BOTTLE.  Only very small cutting tips can be used with a bottle this size.  VERY FEW rosebuds can be used safely with this size cylinder.  The industry standard "draw rate" which was used for years was 1/7th (now this has changed to 1/10th) of the bottle capacity.  This means that the MAXIMUM flow rate from an 80 Cu Ft bottle is 1/7th of 80 or 11.4 Cu Ft/Hr.  Any Smith (as an example) cutting tip larger than a #2 exceeds that rate.  ALL their rosebuds exceed that rate (in fact the smallest rosebud uses 29 SCFH).Your comments/responses are just flat out STUPID.
Reply:Originally Posted by pyroracing85Why does everybody keep saying this?
Reply:You need to find a different weld shop.  Those guys are going to get you killed.If you walked into a weld shop that I owned and asked the questions you've asked on this board, I'd confiscate the tanks for your own safety.If you insist on pursueing your current course of action, please do so in a large open field, away from any structures or bystanders.  I'd hate to see you kill someone else with your ignorance.  You, on the other hand, I'm not so sure about.  Tampa/St. Pete may be a safer place without you.For gosh sakes, go to HD/Lowes, etc and buy a dang book on BASIC WELDING.It's absolutely crazy to me that our government requires training/certification to have a scuba bottle filled and yet anyone (no matter how uninformed) can walk into a welding shop and walk out with a bottle of acetylene (much more dangerous)This is one of the most RECKLESS posts I've seen lately.Don't confuse the fool with facts, his minds made up.  Got an answer for everything.Syncro 250 DX Dynasty 200 DXMM 251 w/30A SG XMT 304 w/714 Feeder & Optima PulserHH187Dialarc 250 AC/DCHypertherm PM 1250Smith, Harris, Victor O/ASmith and Thermco Gas MixersAccess to a full fab shop with CNC Plasma, Water Jet, etc.
Reply:Oh wonderful, he lives within a few miles of me... I better build a blast shelter..If you cannot convince them, confuse them.         Harry S Truman
Reply:the guys in the lws work behind a counter..they may never have done anything slse in there lives.and no, goddammit nonono you donot run a rosebud at 40 psi ox.you're jerking us off with these answers, right? youre not serious at all right?
Reply:Okay guys stop bashing and help a brother out!!
Reply:you know we are tryingget a good book or a real teacherOriginally Posted by pyroracing85Okay guys stop bashing and help a brother out!!
Reply:first off you need to read the book , then look at what size tip you have in the torch , go back to the book and see what the manufacturer recommends for the settings .third if you read the book to me you have torch with three knobs the two on bottom one is oxy and other acet , the oxy is turned all the way on acet only when you are going to use it . now the knob on top is oxy and that is where you make your adjustment after you light the acet.now going to burn, if tip is the right size for your metal thickness ,you are going to place torch just above the steel wait until it gets cherry then you depress the oxy lever and move only as fast as the torch is able to cut ,if at any time you go faster and you stop cutting thru let go of oxy lever and let it heat up the steel and start process all over
Reply:[ame]http://www.youtube.com/watch?v=X1LwYJ8pDhc[/ame]and this is only a little bit
Reply:Attached Images"Any day above ground is a good day"http://www.farmersamm.com/
Reply:I cut just fine with Oxy @ 25-30, and Ace @ 4-6.  But like they said, grab a book and read it.  Don't follow along with the book as you do it.  Read ALL of it first, understand it, then do it.It's not what you can buy, it's what you can build.
Reply:The guys on here are talking from YEARS of experience. They know (and have seen it all). If you ingnore experts in any field, your asking for trouble. Just because you want to do something don't make it a smart move. I am a novice Oxy torch user.  I read all the instructions.......I read some articles about "how to" and even then The first few times I fired mine up, I had a professional welding friend standing over my shoulder. I don't know everything, but I know what I shouldnt do..............
Reply:If you can't sit still for a book, then at least try an instructional video.  Ten bucks and 45 minutes of your day could save you your life.  Plus, you'll learn how to cut.
Reply:Cutting with oxy fuel is quite easy, its just that most folks don't understand that you need the correct nozzle and one size doesn't fit all. Another common miss belief among the misinformed is that the more oxy pressure the better. Running the wrong pressure with the wrong tip size will only lead to horrible results, sure your results from using a huge tip with heaps of oxy hacking up scrap will be fine but try cutting anything important and you will quickly learn. I have seen plenty of idiots messing about trying to oxy cut, lost count of the number of people I have seen cutting over hoses etc. Even seen someone drop the lit torch next to the oxy cylinder when they had a bit of blowback Surprised more people aren't killed every year to be honest.