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Alex \(YMG\)
 
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Default Min. radius bend in 22mm pipe

Hi,

Simple question I know, but - what's the minimum radius in which I can
expect to be able to bend a 22mm half hard copper pipe through 90 degrees,
with a reasonable quality pipe bender (it has adjustable formers)?

Thanks in advance!

Alex


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Dave Plowman (News)
 
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In article ,
Alex \(YMG\) wrote:
Simple question I know, but - what's the minimum radius in which I can
expect to be able to bend a 22mm half hard copper pipe through 90
degrees, with a reasonable quality pipe bender (it has adjustable
formers)?


You'd have to explain this - all the benders I've seen have a fixed
former, and that defines the radius.

--
*Time is fun when you're having flies... Kermit

Dave Plowman London SW
To e-mail, change noise into sound.
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BigWallop
 
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Default


"Alex (YMG)" wrote in message
news
Hi,

Simple question I know, but - what's the minimum radius in which I can
expect to be able to bend a 22mm half hard copper pipe through 90 degrees,
with a reasonable quality pipe bender (it has adjustable formers)?

Thanks in advance!

Alex



If you need a tighter bend on the pipe than the benders form gives, try
using a 90 degree elbow fitting.


  #4   Report Post  
Alex \(YMG\)
 
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"Dave Plowman (News)" wrote in message
...
In article ,
Alex \(YMG\) wrote:
Simple question I know, but - what's the minimum radius in which I can
expect to be able to bend a 22mm half hard copper pipe through 90
degrees, with a reasonable quality pipe bender (it has adjustable
formers)?


You'd have to explain this - all the benders I've seen have a fixed
former, and that defines the radius.

--
*Time is fun when you're having flies... Kermit

Dave Plowman London SW
To e-mail, change noise into sound.


Sorry my mistake - I'm probably using the wrong terminology.. I meant the
bender has adjustable plates to stop the pipe creasing on the inside of the
bend - the bender is not here hence I'm not sure what the actual measurement
of the bend is.

My reason for asking is I've got a certain space in which the bent pipe has
to fit, and it's a bit of a trek to go and get the pipe bender - so if it
can't bend tight enough, I'll just use a 90 degree elbow, or two 45s.

So to rephrase - what's the usual radius of bend done on a 22mm pipe bender?

Thanks again!

Alex


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John Rumm
 
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Default

Alex (YMG) wrote:

Hi,

Simple question I know, but - what's the minimum radius in which I can
expect to be able to bend a 22mm half hard copper pipe through 90 degrees,
with a reasonable quality pipe bender (it has adjustable formers)?


With a standard pipe bender, 4" or 100mm

See here for full details:

http://www.diyfaq.org.uk/plumbing/Pipe%20Bending%20(BillP).pdf

--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
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Alex \(YMG\)
 
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Default

"John Rumm" wrote in message
...


With a standard pipe bender, 4" or 100mm

See here for full details:

http://www.diyfaq.org.uk/plumbing/Pipe%20Bending%20(BillP).pdf

--
Cheers,

John.



Ahh John, thanks I now even remember participating in the thread last
time that pdf was mentioned. Must do something about my memory (too young to
be going senile already).

Thanks again

Alex


  #7   Report Post  
Rick Hughes
 
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"Dave Plowman (News)" wrote in message
...
In article ,
Alex \(YMG\) wrote:
Simple question I know, but - what's the minimum radius in which I can
expect to be able to bend a 22mm half hard copper pipe through 90
degrees, with a reasonable quality pipe bender (it has adjustable
formers)?


You'd have to explain this - all the benders I've seen have a fixed
former, and that defines the radius.


What is wrong with a spring and using your knee ?

If you anneal the copper first it will be easier .... but if you are trying
to go tighter than 90 degrees this can cause a lot of resistance


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Dave
 
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Dave Plowman (News) wrote:
.... snipped

If you don't anneal table x it will crinkle with a spring. Really, it's
far better to use a decent bender. They're not *that* expensive.


Any suggestions for where to buy a "decent" bender and how to recognise
whether it's decent or not (features or type?)

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Dave S
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Christian McArdle
 
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Default

What is wrong with a spring and using your knee ?

I've not been successful with a spring. The pipe snaps and the spring gets
trapped. I didn't bother attempting to retrieve it. The bend is a dream in
comparison. Nice accurate and smooth bends.

Maybe the springs worked better in the 1970s when the copper was thinner and
softer.

Christian.





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Dave Plowman (News)
 
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In article ,
Dave wrote:
If you don't anneal table x it will crinkle with a spring. Really, it's
far better to use a decent bender. They're not *that* expensive.


Any suggestions for where to buy a "decent" bender and how to recognise
whether it's decent or not (features or type?)


Dunno - I've got a yonks old Record. You could check out your local PM -
can't see them selling rubbish. But I've heard of some mail order cheapies
not being up to the job.

I'm not sure any have 'features' others don't. They just need to be well
made, as a lot of force is needed to bend 22mm tube.

--
*The problem with the world is that everyone is a few drinks behind *

Dave Plowman London SW
To e-mail, change noise into sound.
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Lurch
 
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Default

On Fri, 17 Dec 2004 09:32:46 +0000, Dave
strung together this:

Any suggestions for where to buy a "decent" bender and how to recognise
whether it's decent or not (features or type?)


It'll say Hilmor on the side if it's a decent one. Record are good
too. Buy anything else and they're just ****e.
Expect to pay £45-50 for a Hilmor one from a plumbers merchants.
--

SJW
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Lurch
 
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On Fri, 17 Dec 2004 09:32:46 +0000, Dave
strung together this:

Any suggestions for where to buy a "decent" bender and how to recognise
whether it's decent or not (features or type?)


It'll say Hilmor on the side if it's a decent one. Record are good
too. Buy anything else and they're just ****e.
Expect to pay £45-50 for a Hilmor one from a plumbers merchants.
--

SJW
Please reply to group or use 'usenet' in email subject
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