bending 1/4 plate 3 inches wide, how big a rosebud tip do I need?

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I am trying to bend some 1/4 plate that is 3 inches wide.  I have a victor wh 260c handle.I am willing to buy a rosebud tip to heat the metal and bend it, but I want to be sure it will be big enough.I do have some firebrick that I can use to protect the sides and retain a little heat.Any recommendations would be appreciated.  I live in Wylie Texas, (dallas) if someone is near and can make  the bends in 2 pieces (I am making U shapes with 11 inch legs and 7 inches between them) I would appreciate the help.Thanks
Reply:you can probably get by with using a big cutting or welding tip. that material isn't very thick/wide and a rosebud might be overkill if it's not too many pieces you want to bend.i.u.o.e. # 15queens, ny and sunny fla
Reply:1/4" plate will heat up without too much fuss. As far as tip size, I would buy the biggest tip your cylinders will allow. The rule is 1/7 of  total bottle cf every hour max. For acetylene. So it will have a lot to do with cylinder size  as to how much heat you can safely get.What size tanks are you running?Real welders know how to penetrate!(Equipment)Whatever can be used to beat my opponent into submission!
Reply:By the way, i did a double post ignore the other thread.my tanks ate about 7 inches in dia (real rough measure) Oxygen is abiut 42 inches, acet is 33 inches...... I have a no 0 cutting tip, I guess I can go ahead and try it...
Reply:I am making 4 bends, 2 u shapes, 11 inch legs, 7 inch wide base.I have a piece of 3/8 plate 7 inches wide that I can use as a form to bend it around.
Reply:Rosebuds can heat too large an area some times. A large welding tip or even using the cutting torch can give you a more concentrated heating area. If I was doing this, I'd clamp the piece to my heavy table so the bend line is in line with the table edge, and heat along that line back and forth slowly until I have that line nice and red.Then I'd use the hammer to fold it over the table edge. The 2nd bend gets a bit more difficult as the 1st bend will want to get in the way depending on how you do it. I'd just extend the piece out 7" and repeat the process again. Doing a few test bends will tell you if you "loose" anything on the bend radius and how much. If your test piece, you do your bend at say 5", and your final size is 4 3/4", you know to get 5" you'd need to set up at 5 1/4" instead.As mentioned the size of your cylinders will dictate if this is possible with what you have. Note taht a size 8 rosebud is really too large for me to use on my 75 cf acetylene cylinder, except for brief periods. I really need a bigger cylinder if I plan to do a lot of heating with a rosebud. The vast majority of the time I heat with either the "big" welding tip, or the cutting torch. The only time I break out the rosebud is when I have large areas to heat all at once.Oh FYI I deleted your 2nd thread that was redundant to save confusion..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:I just tried my size 0 cutting tip, I could not keep the entire 3 inches hot enough, even with some fire bricks around it.  I lent the tourch out a while ago and did not get any of my other tips back..... If I have to buy a new tip am I better off with a lerger cutting tip or a large welding tip to get the most btus needed to heat this @#$%@%bthing? Thanks.
Reply:Several yrs ago Zapster posted a formula or rule for how much to extend the bend line to compensate for thickness. Maybe he'll chime in.                                                          MikeOl' Stonebreaker  "Experience is the name everyone gives to their mistakes"Hobart G-213 portableMiller 175 migMiller thunderbolt ac/dc stick Victor O/A setupMakita chop saw
Reply:A 0 is a fairly small cutting tip.   I suggest that you buy a number 1 tip, they are not super-expensive.  I would be hesitant about using a number 2 tip with the small acetylene bottle.Richard Originally Posted by wilsonintexasI just tried my size 0 cutting tip, I could not keep the entire 3 inches hot enough, even with some fire bricks around it.  I lent the tourch out a while ago and did not get any of my other tips back..... If I have to buy a new tip am I better off with a lerger cutting tip or a large welding tip to get the most btus needed to heat this @#$%@%bthing? Thanks.
Reply:Originally Posted by wilsonintexasI just tried my size 0 cutting tip, I could not keep the entire 3 inches hot enough, even with some fire bricks around it.  I lent the tourch out a while ago and did not get any of my other tips back..... If I have to buy a new tip am I better off with a lerger cutting tip or a large welding tip to get the most btus needed to heat this @#$%@%bthing? Thanks.
Reply:#3 cutting torch tip with 10psi Acetylene and 30psi Oxygen, will do what your needing to do....
Reply:I hardly ever use any of my rose buds any more. I just usually use a #3 at what ever it is set on with the 2/0 that is usually in it.
Reply:I use the cheapo HF pipe bender. It will put a perfect radius bend on 3/8" x 4" flat, cold. My computer is being worked on, I will post a pic when it is done.
Reply:thanks for the replies.and thanks for cleaning up my duplicate post.I have a 145 cf acet tank and a 125 cf oxygen tank.As for going after the guy....... I can not really complain to much, he kept a bunch of stuff in storage for me for 12 years while I was overseas in England.  (at no charge).  he also brought up his 40 ft flat bed and drove it down to his farm where he stored it...... so after 12 years I can not complain to much.I went online and found some cutting tips for $5.00 each.  So I ordered a 1, 2, and 3.  They aslo had a no 4 welding tip on sale for $5.00, so it is coming along as well.  I will give the no 3 cutting tipa a try when it gets in next week.  Until then I have other things to play with.It looks like a pipe bender would do it, but I can not put that much money into another tool now....... Thanks for the recommendations. I
Reply:Do you have a 20 ton hydraulic press ? I have the harbor freight and made a break for it. No issues bending 1/4 x 3 flat stock. Too bad your not a thousand miles closer.
Reply:Is cutting and welding an option?Teach Ag Mech - Mike At Home:Lincoln Electric AC225Miller Challenger 172Gas AxeWork:eclectic bunch of 90's vintage blue boxes
Reply:I wish I were a thousand miles closer...... No press at all, just a home shop.... If I can not get it bent with the no 3 tip, I will use a cutting disk and cut about half way through and then try to bend and weld it. If that does not work, 3/4 way, or simply cut it in pieces and weld it up.
Reply:mfa 6 rosebud or score it with a grinding disc, put it in a vice and waylay it with a sledge, then weld the scored line.!/4 x 3 will take 30 seconds max with the mfa 6. Eight lbs acet, 15 lbs. O2.Don't get ripped off. Buy the rosebud at weldingcity com.Bubble gumTooth pixDuct tapeBlack glueGBMF hammerScrew gun --bad battery (see above)
Reply:Originally Posted by Burpeemfa 6 rosebud or score it with a grinding disc, put it in a vice and waylay it with a sledge, then weld the scored line.!/4 x 3 will take 30 seconds max with the mfa 6. Eight lbs acet, 15 lbs. O2.Don't get ripped off. Buy the rosebud at weldingcity com.
Reply:Originally Posted by Burpee put it in a vice and waylay it with a sledge,
Reply:Today at work I welded 2 12"x8" pieces of 1/4 " plate to the ends of a 4" I beam that was 6' long. This beam went down inside a 6' ID concrete sump hole to support the pump and pipe. We had to round the 1/4" plate to confirm to the inside walls of the sump so we could hilti drill and anchor each side of the beam to the wall. Once the 1/4" plates were welded to the ends of the 4" I beam, I used a 4lb hammer to round the edges of the plate. It bent very easy, only took a few whacks with the hammer.JasonLincoln Idealarc 250 stick/tigThermal Dynamics Cutmaster 52Miller Bobcat 250Torchmate CNC tableThermal Arc Hefty 2Ironworkers Local 720
Reply:20 lb sledge 24 " adjustable piece of pipe no heat needed!
Reply:It's only 1/4" plate. You could bent this with a ball peen hammer.JasonLincoln Idealarc 250 stick/tigThermal Dynamics Cutmaster 52Miller Bobcat 250Torchmate CNC tableThermal Arc Hefty 2Ironworkers Local 720
Reply:Originally Posted by snoeproeIt's only 1/4" plate. You could bent this with a ball peen hammer.
Reply:These are going to fe forks for a wheel. Could live with up to 1 in rad but would like tighterIf i still had my blacksmith vice it would be easy, but it was left at the last move (no place to set it up here).  I did keep my anvil so the plan for now:1) Try the no 3 weld tip when it gets in next week2) consider a quick forge, i have some fire brick a blower and some pipe. I also have to straighten out the old bend forks so i can weld on the new ones3) score, bend, and weld anccut off the old bent piecesI am trying to salvage and modify o frame i got from the scrap yard that was abused and bent up whemm they tosses it on the pole. But i only paid $20 for it and it is a prototype to test some ideas out.Will let ypu know how it works outI miss having access to a shop with presses, and all the equipmentWHAT!!!! You left a post vise??If it were me I'd go back and get it, even if I had to mount it to the kitchen counter!Far better than any bench vise for sure.Real welders know how to penetrate!(Equipment)Whatever can be used to beat my opponent into submission!
Reply:at the time I thought I was moving to England full time and we had limited space to ship things.......   ( I had been on a previous assignment to England for 12 years and my wife really liked it.  It looked like the next assignment would take me on as an in-country hire and it would be  permanent. I left a lot of stuff go in an estate sale to down size and prepare for an english sized home.Got to England, job lasted 3 months and then I was sent back home......   oh well...... at lest I was able to stay with the company and get a job, that is how i landed in Texas.....
Reply:the cutting tips came in yesterday and I put on the no 3 cutting tip.  It did the job with no problem.  It took two heats, but it worked well.  The second bend was more of a pain, it was harder to hold and get it stable over the anval, but it worked out.  Thanks for all of the recommendations.Ran out of gas at 12:15 on a Sat, the tanks had been in storage while I was in England and I was a little concerned about getting them exchanged..... the o2 had a 90 stamp with a star,,,,,,, still 14v years out of date.  The local supply was open until 1:00..... got ther at 12:55.  He said he would charge me a test fee, which is fair.... but during checkout he forgot about it because he was closing up...... lucked out on that one.Plan to use them for my supplies in the future.