How To Bend Round Tube In Any Angle | Tube Bending | mr technic
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- Опубликовано: 18 ноя 2024
- How To Bend Round Tube In Any Angle
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As a side note: Years ago an old welder told me he would bend pipe by packing it with sand before heating and bending to keep it from kinking.
it works ive done it
useful for heat bending thin wall tube where risk of kinking is higher. heat bending thick pipe isn't so problematic.
@@daos3300 Good to know.
This is the correct way to bend a pipe.
@@TheGreatSeraphim the correct way depends on end use and available tools
When you don't have the fancy tools, you gotta get creative! 👍😁
@C W Oh come on now, that's as rare these days as common sense.
Master saya mau blajar ,sama master.👍👍👍🤝🇮🇩 Indonesia
In my country we say "a well traced job is half done!" congratulations for this beautiful tracing.
Can save you a lot of work ... got a bunch of pipe benders in my garage , Stop by any time, you can borrow them
Looks like it would LEAK.
normally you weld it after
@@Deadchannel06 He was being sarcy :)
@@Interdiction I had to look up what sarcy meant. I have never once heard someone use that before.
Excelente desarrollo para tubos de diámetros chicos ok
Exelente maestro
this guy has never heard of a pipe bender
I was thinking the same thing. If he can buy a welder and angle grinder where he is, then I'd expect they'd sell pipe benders. But if he can't get one, maybe this is the only way to get a curved bend. Me, I'd just cut two 45° angles and weld 'em up. If anyone complained that it didn't look as good, then TOUGH!
@@newenglander4513 two 45° welded up would probably look better than what hes done especially once he welds it up with the stick welder
Thanks , thanks 😌
Awesome. Don't forget to de-burr the inside of the tubing where cuts are made if running wire. Burrs will cut it for sure.
Man these metal angle videos are really satisfying.
Thanks for sharing👍👍👍
Thank you too
PL clear calculation in briefly so that I would understand, best regard
Yes brother,, also me
Big Radius = 159mm (160mm)
Small Radius = 85mm
160mm - 85mm = 75mm(needs to cut)
For Small Radius cut out:
75mm/5 cuts = 15mm per cut for Small Radius
85mm/4 = 21.25mm or 21mm. (3mm tolerance)
From 0 to 159 he used this calculation.
Simplify:
0+15+21+15+21+15+21+15+21+15 = 159mm
Or;
0+15 = 15
15+21 = 36
36+15 = 51
51+21 = 72
72+15 = 87
87+21 = 108
108+15 = 123
123+21 = 144
144+15 = 159
For Big Radius
75mm/5 =15mm
159mm-15mm = 144mm
144mm/4 = 36mm
Reference;
((36x4) + 15) = 159mm
15mm/2 = 7.5mm
From 0 to 159
0+7.5+36+36+36+36+7.5 = 159mm
Or
0+7.5 = 7.5
7.5+36 = 43.5
43.5+36 = 79.5
79.5+36 = 115.5
115.5+36 = 151.5
151.5+7.5 = 159
His method is a little bit confusing because he used 5 cuts on 75mm which is needs to be cut-off instead of using it on Big radius.
For eg;
Big Radius;
160mm/5leaves= 32mm per leave.
Small radius;
85/5= 17mm
160-85 = 75mm cut off
5 cuts = 4 + 2 cuts ( 75/5 = 15)
4+2 cuts is = to 15/2 = 7.5.
4 is equals to 4 @ 15mm = 60mm
2 is equals to 2 @ 7.5mm = 15mm
60mm+15mm=75mm
There for from 0 to 160 needs to calculate like this;
7.5+17+15+17+15+17+15+17+15+17+7.5=160mm
0+7.5 = 7.5
7.5+17 = 24.5
34.5+15 = 39.5
39.5+17= 56.5
56.5+15 = 71.5
71.5+17 = 88.5
88.5+15 = 103.5
103.5+17 = 120.5
120.5+15 = 135.5
135.5+17 = 152.5
152.5+7.5= 160
It's the same. You will get 90° elbow.
I have a 35 year old John Deere 14SB self-propelled lawn mower. The deck and engine are complete tanks. However, the handle assembly eventually suffers metal fatigue and cracks. I've replaced the handle before from parted-out examples on eBay. But, those also have years and years of previous use fatigued into the metal.
Well, last Fall (2020) I took a day to fix the handle problem once and for all by using 3/4" black iron pipe available at any Big Box hardware store. The two 90° bends forming the upside down "U" of the handle are way too tight to bend with such thick-walled pipe. So, I just started cutting out wedges like in your video. No calculations, I just did it by taking little nibbles and checking the bend. Obviously, once one side was satisfactory, the other could be closely duplicated almost on the first try.
There's other parts of the fabrication process to complete the whole handle lower half. But, the 90° bends are the biggest part of the build.
I tried to keep the fabricated handle pretty by grinding the wedge welds flush. However, there wasn't enough weld penetration to keep wedge location cracks from appearing. No worries, a few MIG beads here and there allowed to remain proud of the pipe surface fixed the cracking and are of no issue cosmetically to a 35 year old lawn mower...
Wedges work!
Очень интересное решение! Молодец!
Can you do bend the pipe into a calisthenics ring pls reply
Yes
Nice...... Tehnicel creative👍
Thanks
🤯
Master....
Aap bol kar pharmula shamjhayen so naice
Exceptional.
Very nice job.
What’s the funktion by taking 15+21+15+21(and so on) instead a more even meassure?
Outer diameter is 160 (which is the length of the straight tube), inner diameter is 85. 160-85=75 => the part you need to cut out. He chose 5 cuts > 75/5=15.
Inner diameter, 85 is need to stay there, so 85/4=21,25.
15+21+15+21... translates to cut+pipe+cut+pipe....
The number can be same, but only on specific inner/outer diameters and numbers of cuts, which makes it improbable.
@@andreasteriovsky9839 That made a lot of sense! Thank you for your awesome explanation! 🌹
Hello, I would like to know if for a 4 inch diameter OD pipe, the same measurements can apply? If not, how to calculate.
Excellent
Thanks
great work, and from the state , thanks for using the metric system..it is all i use here
FWIW, if you multiply any circle's diameter by 22 then divide the result by 7, you'll end up with the circle's circumference. Likewise, if you multiply the circumference by 7 then divide the result by 22, you'll end up with the diameter.
I haven't really heard of getting pi in that manner.
I just normally multiply diameter times 3.14 to get circumference. Easy to do in the mind without a calculator.
@@Neishy4AGTE It's an old approximation. It only really works if you're operating with just two decimals.
¡ Amazing, Thankyou vm and congratulations !. Mr Technics . I don"t understand de mm cut sequences in the big an little Curve of pipe. I see, for example in the large curve, that sequence increasing 15 and 21 mm ?.
Is not clear to me what is the form for each curve what is each number of eqjidistance of cuts. I need the form to calculate. All is vefy useful and I"m very thankfull of your teachings. Health for you and your family
The outside radius measured in a straight line is 160mm
The inside radius measured in a straight line is 85mm
The difference between the two is 75mm
75mm divided into 5 cuts equals 15mm- this is the amount of material that needs to be removed in each cut.
85÷4=21. This is the number between each cut, thus you start on the inside radius starting with 15mm,then start alternating 15,21,15,21 etc.
On the other side, you aren't removing any material, so you take 15mm÷2= 7.5mm for your first mark, then you add 15+21=36 - this is the pattern for the opposite side:7.5,36,36,36,36,7.5 which adds up to 15mm,which equals the outside radius .
Hopefully I made sense. 😂
159mm*
@@BenjaminHalvorsen thanks
@@BenjaminHalvorsen Not radius of curvature. The (outer) radius of curvature is 4 inches as he indicated (and arbitrary selected) in the plan. This is the circle arc length corresonding to 4'' radius and 90 degrees angle. (s=π/4χ8''=3,14χ8χ25,4:4=159,5mm, where 8 inches is the outer diameter, of curvature always). In the inner we have the same calculation which gives 85mm as you mention (although did not indicate the pipe diameter etc etc). So we have to remove from the inner side 75mm and to allocate them in the remaining length of 85mm. I am sorry but I have seen and other comment which refers to again (citing numbers only) and this causes, to my opinion of course, confusion. Mr Technic should be more explanatory, except his aim was only to impress!!!!!!!
@@BenjaminHalvorsen u explain perfect!
Now it isn’t round tube it’s cut up tube that’s lost all its strength! Welded sections like that are good for what? Exhaust pipe? Certainly not for structural frame or gases or liquid. The beginning instruction is great for bending lengths into angles, but once again what good is a cut up tube!
Pardon my ignorance, but is the first radius of 159/160mm an arbitrary measurement and, if not, what determines it?
Good
Very nice!
Thanks!
Just buy a conduit bender and save the time and hassle.
Hey, there is always going to be some goof who thinks this would be a good idea. Or, you cold take some heavy plate, cut it to the radius you want, and bed. If you need a bend that isn't crimped just plug one end, fill it with sand that is well tamped done, throw another plug in the other end and bend it. The sand backs it up and keeps it from crimping.
Check Out the background. It’s a good bet this was done somewhere Rutube vendor is not available. I’ve been in small poor countries all over the Middle East forest. And I’m amazed at what these guys can do with the aluminum amount of tools. Hats off to this approach
Great video !!!
Thanks for the visit
Wow another amazing video thank for this bro👍staysafe
Thank, stay safe you too
Nice!!!
Unfortunately the tube is leaking after "bending" like this, as there are now 5 open cuts.
Or with other words: You have shown a really nice method to produce a pipe bend, if we imagine still welding up the cuts. Kudos for the principle and the nice execution. But it has nothing to do with "bending a tube", and the strength of the piece will suffer when welding it 5 times. Besides the risk that there's a flaw in any of the welds going unnoticed, causing it to maybe fail at a later time.
If one is really desperate and doesn't have the tools needed for a proper bend, sure, go for it. But I wouldn't, as long as avoiding this method is feasible in any way.
Where is the 15mm 36mm 51 and 72mm came from?
Nice to see metric measure being used instead of the stupid imperial.
Imperial made sense, and still does, if you understand what it's used for and when to use it. A measurement system based off denominators of 12 makes it very easy to divide by 2, 3, 4, or 6, and end up with a whole number, in ways that you can't with any system based on 10. For example:
10/3*4*2= 28.6666666666666666667
12/3*4*2= 32.
10/6*5/2*4=16.666666666666667
12/6*5/2*4=20
The bender in my truck seems too easy now..🥴
or you could you know...just get a tube bender lol...
That would make a very nice exhaust pipe, but I wouldn't use it on a roll cage.
not sure its all that useful though- with pie cuts, you can mock up the pipe as you go,,compensating for warp etc.
with this you got to plan it and for the hours you are putting in? , you could afford a pipe bender
@@deadprivacy Where are you getting hours? I see this taking 10 minutes tops to scribe the pipe, and then from there it's not a significant amount more time to cut the pipe. I agree that pie cuts are still the better route, but I mainly see the benefit as being able to do complex curves rather than a curve limited to a single plane.
@@TacohMann pie cut, place, tack, place tack place tack...this?
route, measure, cut bend, offer up, weld, warp have to adjust, cut, etc,...bloody pointless.
He's demonstrating a practical technique that if done right will have good results. If he stood up in front of a chalk board and threw up a bunch of formulas, he would lose most of his audience. Most people who actually would use this method don't want to see no formulas...just a way to do it and make it uniform. When he measured the outside circumference, I saw 162, not 159. And the final result was more than 90 which would be easily fixed by a little grinding in each wedge. With a little practice you might learn how to calculate how much extra to notch to make it perfect as the notches should still have a gap for welding. It's a technique he's teaching...I imagine that's why he calls himself Mr. Technic.
I don't understand the practical application. Even after its been welded, the strength and gas/liquid tight integrity would be highly questionable. What does this buy you that something like a hydraulic pipe bender can't do?
@@grimlock1471 I wouldn't do it either, but for a hobbyist fabricator who doesn't have access to a hydraulic bender it would do.
@@grimlock1471 it buys you the ability to turn a pipe 90 degrees without a pipe bender. (which for that sized pipe is f***ing expensive, btw)
@@mysterycrumble Does the ware of grinder/torch gas for cutting and welding 5 segments + time cost less than just buying the part and cutting/welding pipe once? I personally dont know, but this doesn't seem like efficiency, more improvised solution.
When exactly did he bend it. I saw pie cut but bending is totally different
Nice work 💪
👍
Thanks 🔥
I must be missing something. At 4:48 he is marking at intervals of 15 and 21 mm. I infer that he got the 15 from the division he did at 1:24. Where did the 21 come from?
There are four segments remaining in between the cuts, which total 85 mm. Divide 85 with 4, and you get ~21.
@@lDanielHolm thanks!
where did you get 36?
🙂 nice
Buy a tube bender make it look clean not like your doing an add for harbor frieght
Hablas poco, pero esta bien
I think I will just buy an elbow ...thanks
Parabéns pelo trabalho👍
NEWS FLASH ,,,, this isnt bending , its cutting.
The nice thing of living in the USA is we just buy a pipe bender
I could do that by eyesight!
I'm willing to bet he was using his eyes too.
Does anyone know the measurements for the marks you need to cut
Расскажите дядьке про трубогиб
0go to my local pipe supply and get a long sweep and only have 2 welds not 20
that was some complicated balogna.....
Well done my friend. Where are you located by the way? I'm in Asheville, NC, USA
Cómo saco esa cuenta si el tubo es redondo de 3 pulgadas
Right ...
L. O. V. E. I. T!
Wow, amazing to watch a craftsman at work! Here's another example why we need to concentrate on STEM teaching curriculums. I wish I had paid more attention to math and science in school. Now I just have a shitty liberal arts degree and a mountain of student loan debt...
Fill the pipe with sand or water and sealed both the ends. Use a pipe bender and you are done. That is how it is done. This is not practical for small dia pipe. For larger dia pipe such as 12, 24, 36 inch yes that this is how one should do.
That's a lot of work just to bend one pipe.
Well, if you need the bend and don’t have the massive equipment needed to bend a pipe this big, what other choices does one have? In the third world, it is amazing what those craftsman can do with very little resources.
I put it in the forge until yellow-white, no sand backing required
That is most definitely not "bending" a pipe.
It started off straight and in the end it was bent.
Call it what you want, we live in a free world after all
@@krikukiks In the professional world that I live in there is no "call it what you want". This was 5 miter cuts on round pipe that were roughly 18 degrees each. I'm not taking anything away from this video, but it seems some inaccuracies exist for the sake of having to create a title.
Genial !!!!!
How did you get those numbers?
try again
now my tube is not a tube but a sieve
You need to work on your welding, then.
Yeah it’s called by a pipe bender
this is the longest way to bending a pipe cap both ends with compressed dry sand inside bending over a former or even faster use a pipe former
try a pipe bender on 8" duct and see how it goes
@@Keechization you don't bend ducting you use fittings or flexible ducting
@@Keechization nice straw man.
Not all pipe bends well. It requires the material to stretch and compress, emt conduit is made just for that, galvanized schedule 40, not so much.
@@mplsmark222 as for all steel tube pipe bends lovely people talking about air ducting do not understand it's made from sheet metal formed in a spiral and crimped together at the joints so cannot be bent in any way shape or form
I suppose he used galvanized pipe to show the markings but you would have to be careful with ventilation welding it.
Just have a glass of milk handy when welding
How is that possible? The tube is 90 degrees and he can touch it with is bare hands?
It’s 90 degrees Fahrenheit, not Celsius. So no worries for unprotected skin.
@@jonhunt5408 Ok, thqnks. I was real confused.
Ise this bent pipe i gas supply lines
but now it's full of holes...
You've got to be kidding me. Is this supposed to be an example of the most complicated time consuming way to bend pipe? If that's the case you succeeded. There is this common place tool called oddly enough a pipe bender. You can get them in a hand bender version (up to a certain size) or a ratcheting version or a hydraulic version. You can even get them as a mandrel bending type so that the diameter of the pipe remains constant thru out the bend. smh
Michael just some friendly advice but I'll get you to watch your use of the crack pipe before commenting in future.
I can can see if you don't see any interest in this vid then no one else needs to watch it either.
I'm sure that's not how you'd behave if you were having a meal with your family.
@@ThePaulv12 I agree with Michael. There are much faster ways of bending pipes. Ask an electrician who has to install conduits. Also your weakening the pipe this way.
That’s not bending
👌👌👌👍👍👍🙏🙏🙏
👍👍👍
thats more like 110 not 90, good effort tho
Welding will shrink the inside a fair bit. Weld the center seam last so you can control the angle easily.
Looks slightly less than 90 degrees…
Will be at 93 degrees when welded🤣
Your scissors always suck, but you have decent cut-off wheels, plasma cutters and MIG machines. Also, I've thrown away better squares and tape measures.
thats about the longest and least practical way of doing what could otherwise be a very simple job. with or without 'fancy tools'.
Ummm, it's called a pipe bender or a tube bender. That is a tool to use for bending pipe. This looks like 2 inch pipe. You can get a pipe bender on Amazon, or at your Home Depot.
Use math not papers!!
If you have any type of stationary cutoff wheel or saw, set it to an angle and cut off several pieces, rotating the stock 180° after every cut. Then you have the curve segments too, and with greater accuracy, unless you're going to weld them together crooked.
but then you aren't accurate in the radius of your cut, it all needs to be caclulated. and doing it this way you don't have any possibility for misalignment
@@Keechization Drawing the back and front lines like he did in the first can be done on that and would allow proper alignment. But it would be quicker. Also you would have a tighter fitment all around and not have the gap to deal with. If it was thin tube then that gap trying to weld it can burn out pretty easily. The only real trade off this gives is they are still connected instead of separate segments which best use is if the angle you are trying to fit is slightly off. I do something like this for simple square cuts for a sharp 90 and its only one segment and it can be time consuming enough.
This idea won't hold water.
Beautiful applied geometry but I dont understand where you got the numbers to trace the cuts. I AM pretty poor at math.
A bend has two lengths: the inner and outer "arc length." He cut that 90⁰ arc out of paper to figure out how long those two bend lengths on his pipe needed to be.
When the pipe is straight the inner and outer lengths are the same, so you have to cut material out of the inner side to shorten it to length.
You can pick how ever many segments you want in your bend. Take your outside arc length divided by the number of segments you want, then mark those "center lengths" on your outside and inside arc lines.
Then subtract you inner arc length from your outer arc length (that's the total amount your going to cut out), and divide that total amount by your number of segments (that's how much you'll cut out at each center mark on your inside arc). Finally, divide that segment removal amount by 2, and that's how much you'll cut before and after each center mark.
Example. Say your outer arc is 100 and your inner arc is 60 and you want 5 segments. 100 / 5 is 20, so mark the pipe every 20 on your inner and outer arc lines. Then 100 - 60 = 40, you'll need to cut out 40 total on your inner arc for the bend to work. 40 / 5 segments is 8, so you'll cut 8 out if each segment on your inner arc. 8 / 2 is 4, so at each center segment mark on your inner arc (measured every 20 from before), you'll mark 4 before and 4 after.
So center mark 20, +/- 4 (16 and 24)
Center mark 40, +/- 4 (36 and 44)
And so on.
The bend is 160 mm long. The length of the inner part of the curve after the bend is 85 mm. So he took 160 and deducted 85, and got 75 -- that's what he needs to remove from the bottom of the pipe to end up at 85. He divides that by the number of cuts he's making, which in this case is 5. So each cut removes 15 mm of material. With 5 cuts, he has 4 remnants in between the cuts, so he divided the 85 with 4 and got ~21, which he adds to the 15 to know when to start the next cut. So the first cut is at 0mm, the start of the bend, then at 15 mm, then the next at 36, then the next at 51, then 72, then 87, then 108, then 123, then 144, then finally 159. He gets the second set of numbers by first halving the 15, since he wants each cut to taper to a point. He then adds 36, since that is the length of the removed section + the remainder that was left over. 7.5 + 36 = 43.5, then 79.5, then 115.5, and finally 151.5.
From the side:
.........15mm...........36mm.......51mm.........72mm......87mm........108mm...123mm........144mm...159mm
|.....15....|........21.........|.....15.....|........21.........|.....15.....|........21.........|.....15.....|........21.........|.....15.....|
\ / \ / \ / \ / \ /
\ / \ / \ / \ / \ /
\ / \ / \ / \ / \ /
\/ \/ \/ \/ \/
|7.5|................36................|................36................|................36................|................36................|.7.5..|
.7.5mm........................43.5mm.......................79.5mm....................115.5mm......................151.5mm..159mm
@@lDanielHolm Beautifully logical, thank you.
Are you serious !!??😭
We give up!! The horrible intrusive music is too much. People come to a site like this to be educated and instead of your providing educational narration you do this! Did an adult review this video prior to release? Best of luck!
Useless without some kind of information narrative.
36 mm come from
You do know that you can just bend the pipe to 90 degrees right? 🤦♂️🤷♂️
"Just" Not with basic tools.
So complicated and time consuming and the result wasn't 90 degrees at all, from the video it looks like 100 or even more. Much simpler to just do pie cuts marking a center line of the pipe just like he did and then cutting the same angle and rotating the pipe 180 degrees in the jaws. It's nice creating little templates out of paper but the accuracy goes out of the window, besides I don't really see any advantage of this process for this method. If it's structural the inside of the pipe has to be cleaned and deburred and edges have to be beveled for penetration, if it's sanitary it's the same, if this is used for some type of guard rail maybe it'll work but again it's so slow and inaccurate compared to pie cuts
I was thinking the same thing as I watched.
it looks like galvanized pipe WEAR A RESPERATOR! really people lets be careful
Fuck the respirator and just drink some milk
@@jessejackson4690you are almost right but it doesn't work for lactose intolerant people, about 60% of blacks, Latin and Asians. I teach welding to inner city kids and have to be careful, but like you I drink milk