Has anyone done this ?.

I have a 22mm bending spring intended for 22mm copper
and it is a fairly loose fit.

I was going to heat the pipe with my hot air gun
and bend it around something round or maybe
hammer some nails into a bit of old plywood and
use them as a 90 degree guide.

I am replacing the gas pipe that was used to run
power from house to garage in 1976 with the correct
stuff, so needs a 90 degree bend at each end to fit
a metre wide path, before re-instating the path
(dug up for other reasons).

Andrew

On 30/11/2020 14:44, Andrew wrote:
Has anyone done this ?.

I have a 22mm bending spring intended for 22mm copper
and it is a fairly loose fit.

I was going to heat the pipe with my hot air gun
and bend it around something round or maybe
hammer some nails into a bit of old plywood and
use them as a 90 degree guide.

I am replacing the gas pipe that was used to run
power from house to garage in 1976 with the correct
stuff, so needs a 90 degree bend at each end to fit
a metre wide path, before re-instating the path
(dug up for other reasons).

Andrew
Why aren't you using SWA cable?
Is this round or rectangular conduit? Round can be bent after heating
with hot water but will start collapsing if the bend is too tight and (I
suspect) may trip the spring. Why not use the joints made for the
purpose (or SWA)?

On 30/11/2020 15:05, wrote:
On 30/11/2020 14:44, Andrew wrote:
Has anyone done this ?.

I have a 22mm bending spring intended for 22mm copper
and it is a fairly loose fit.

I was going to heat the pipe with my hot air gun
and bend it around something round or maybe
hammer some nails into a bit of old plywood and
use them as a 90 degree guide.

I am replacing the gas pipe that was used to run
power from house to garage in 1976 with the correct
stuff, so needs a 90 degree bend at each end to fit
a metre wide path, before re-instating the path
(dug up for other reasons).

Andrew
Why aren't you using SWA cable?
Is this round or rectangular conduit? Round can be bent after heating
with hot water but will start collapsing if the bend is too tight and (I
suspect) may trip the spring. Why not use the joints made for the
purpose (or SWA)?
Replace "trip" with a similar word containing a more appropriate vowel :-(

On Monday, 30 November 2020 at 15:05:42 UTC, wrote:
On 30/11/2020 14:44, Andrew wrote:
Has anyone done this ?.

I have a 22mm bending spring intended for 22mm copper
and it is a fairly loose fit.

I was going to heat the pipe with my hot air gun
and bend it around something round or maybe
hammer some nails into a bit of old plywood and
use them as a 90 degree guide.

I am replacing the gas pipe that was used to run
power from house to garage in 1976 with the correct
stuff, so needs a 90 degree bend at each end to fit
a metre wide path, before re-instating the path
(dug up for other reasons).

Andrew
Why aren't you using SWA cable?
Is this round or rectangular conduit? Round can be bent after heating
with hot water but will start collapsing if the bend is too tight and (I
suspect) may trip the spring. Why not use the joints made for the
purpose (or SWA)?
You can get a swept bend for the conduit which is easier to push cable through than the normal bends. I pushed 10mm2 T & E through when providing power to my garage. The only thing you may find is that the likes of Screwfix et al only stock the two types of inspection bends. I got mine from CEF.

Richard

On Monday, 30 November 2020 at 15:26:34 UTC, Tricky Dicky wrote:
On Monday, 30 November 2020 at 15:05:42 UTC, wrote:
On 30/11/2020 14:44, Andrew wrote:
Has anyone done this ?.

I have a 22mm bending spring intended for 22mm copper
and it is a fairly loose fit.

I was going to heat the pipe with my hot air gun
and bend it around something round or maybe
hammer some nails into a bit of old plywood and
use them as a 90 degree guide.

I am replacing the gas pipe that was used to run
power from house to garage in 1976 with the correct
stuff, so needs a 90 degree bend at each end to fit
a metre wide path, before re-instating the path
(dug up for other reasons).

Andrew
Why aren't you using SWA cable?
Is this round or rectangular conduit? Round can be bent after heating
with hot water but will start collapsing if the bend is too tight and (I
suspect) may trip the spring. Why not use the joints made for the
purpose (or SWA)?
You can get a swept bend for the conduit which is easier to push cable through than the normal bends. I pushed 10mm2 T & E through when providing power to my garage. The only thing you may find is that the likes of Screwfix et al only stock the two types of inspection bends. I got mine from CEF.

Richard
Sorry forgot the link in previous post

https://www.cef.co.uk/catalogue/prod...ck-sold-in-1-s

Richard

On 30/11/2020 15:32, Tricky Dicky wrote:
On Monday, 30 November 2020 at 15:26:34 UTC, Tricky Dicky wrote:
On Monday, 30 November 2020 at 15:05:42 UTC, wrote:
On 30/11/2020 14:44, Andrew wrote:
Has anyone done this ?.

I have a 22mm bending spring intended for 22mm copper
and it is a fairly loose fit.

I was going to heat the pipe with my hot air gun
and bend it around something round or maybe
hammer some nails into a bit of old plywood and
use them as a 90 degree guide.

I am replacing the gas pipe that was used to run
power from house to garage in 1976 with the correct
stuff, so needs a 90 degree bend at each end to fit
a metre wide path, before re-instating the path
(dug up for other reasons).

Andrew
Why aren't you using SWA cable?
Is this round or rectangular conduit? Round can be bent after heating
with hot water but will start collapsing if the bend is too tight and (I
suspect) may trip the spring. Why not use the joints made for the
purpose (or SWA)?
You can get a swept bend for the conduit which is easier to push cable through than the normal bends. I pushed 10mm2 T & E through when providing power to my garage. The only thing you may find is that the likes of Screwfix et al only stock the two types of inspection bends. I got mine from CEF.

Richard
Sorry forgot the link in previous post

https://www.cef.co.uk/catalogue/prod...ck-sold-in-1-s

Richard


What is the diffrence between a slip bend and a heavy-duty
bend ?. The datasheet accompnaying that link shows both.

On Monday, 30 November 2020 at 16:44:32 UTC, Andrew wrote:
On 30/11/2020 15:32, Tricky Dicky wrote:
On Monday, 30 November 2020 at 15:26:34 UTC, Tricky Dicky wrote:
On Monday, 30 November 2020 at 15:05:42 UTC, wrote:
On 30/11/2020 14:44, Andrew wrote:
Has anyone done this ?.

I have a 22mm bending spring intended for 22mm copper
and it is a fairly loose fit.

I was going to heat the pipe with my hot air gun
and bend it around something round or maybe
hammer some nails into a bit of old plywood and
use them as a 90 degree guide.

I am replacing the gas pipe that was used to run
power from house to garage in 1976 with the correct
stuff, so needs a 90 degree bend at each end to fit
a metre wide path, before re-instating the path
(dug up for other reasons).

Andrew
Why aren't you using SWA cable?
Is this round or rectangular conduit? Round can be bent after heating
with hot water but will start collapsing if the bend is too tight and (I
suspect) may trip the spring. Why not use the joints made for the
purpose (or SWA)?
You can get a swept bend for the conduit which is easier to push cable through than the normal bends. I pushed 10mm2 T & E through when providing power to my garage. The only thing you may find is that the likes of Screwfix et al only stock the two types of inspection bends. I got mine from CEF..

Richard
Sorry forgot the link in previous post

https://www.cef.co.uk/catalogue/prod...ck-sold-in-1-s

Richard

What is the diffrence between a slip bend and a heavy-duty
bend ?. The datasheet accompnaying that link shows both.
Dunno, the one linked was the type I used it had plain ends with a slight notch that stopped the conduit from slipping in more than about 20 mm. What I did note was as the cable was pushed through from one end you could feel it catch a bit on the end of the other conduit. The heavy duty ones seem to have the equivalent of a straight coupler on the ends thus presenting a smoother transition from straight to bend.

Richard

On 30/11/2020 15:05, wrote:
On 30/11/2020 14:44, Andrew wrote:
Has anyone done this ?.

I have a 22mm bending spring intended for 22mm copper
and it is a fairly loose fit.

I was going to heat the pipe with my hot air gun
and bend it around something round or maybe
hammer some nails into a bit of old plywood and
use them as a 90 degree guide.

I am replacing the gas pipe that was used to run
power from house to garage in 1976 with the correct
stuff, so needs a 90 degree bend at each end to fit
a metre wide path, before re-instating the path
(dug up for other reasons).

Andrew
Why aren't you using SWA cable?

ahem, I guess 'cos he is "replacing the gas pipe


--
Robin
reply-to address is (intended to be) valid

On 30/11/2020 15:38, Robin wrote:
On 30/11/2020 15:05, wrote:
On 30/11/2020 14:44, Andrew wrote:
Has anyone done this ?.

I have a 22mm bending spring intended for 22mm copper
and it is a fairly loose fit.

I was going to heat the pipe with my hot air gun
and bend it around something round or maybe
hammer some nails into a bit of old plywood and
use them as a 90 degree guide.

I am replacing the gas pipe that was used to run
power from house to garage in 1976 with the correct
stuff, so needs a 90 degree bend at each end to fit
a metre wide path, before re-instating the path
(dug up for other reasons).

Andrew
Why aren't you using SWA cable?

ahem, I guess 'cos he is "replacing the gas pipe

...that was used to run power...."

I.e. someone dragged a cable through an old gas pipe.





--
Gun Control: The law that ensures that only criminals have guns.

On 30/11/2020 15:38, Robin wrote:
On 30/11/2020 15:05, wrote:
On 30/11/2020 14:44, Andrew wrote:
Has anyone done this ?.

I have a 22mm bending spring intended for 22mm copper
and it is a fairly loose fit.

I was going to heat the pipe with my hot air gun
and bend it around something round or maybe
hammer some nails into a bit of old plywood and
use them as a 90 degree guide.

I am replacing the gas pipe that was used to run
power from house to garage in 1976 with the correct
stuff, so needs a 90 degree bend at each end to fit
a metre wide path, before re-instating the path
(dug up for other reasons).

Andrew
Why aren't you using SWA cable?

ahem, I guess 'cos he is "replacing the gas pipe


The cable is that 'tuf' variety, not SWA so needs a
conduit.

Believe it or not the incoming SEEboard cable is also
inside a bit of gas pipe !!. It comes in under the
storm porch, up through the slab in the front corner of
the house under the door frame, inside some gas pipe, and
then runs along the top of the slab for about 3 feet then
up the party wall and into the metal wylex meter/fuse box.

Meanwhile there is an empty 38 mm black conduit under the path
between house and garage, parallel to the actual 3/4 iron
gas pipe which is inside a length of 4 inch salt glazed
drainage pipe that was wacked inside the garage wall and outer
leaf of house. Exactly where this 38mm black conduit goes
is a mystery. It starts inside the garage about a foot down
from the top of the concrete floor (garage dpc is 3.5 brick
courses higher than the house dpc).

I suspect it terminates under where the Wylex meter/fuse box is,
but without digging through the house slab I can't think of a way
of finding out. An electricians fibreglass thingy would tell me
how long it is but not where it ends laterally.

On 30/11/2020 15:38, Robin wrote:
On 30/11/2020 15:05, wrote:
On 30/11/2020 14:44, Andrew wrote:
Has anyone done this ?.

I have a 22mm bending spring intended for 22mm copper
and it is a fairly loose fit.

I was going to heat the pipe with my hot air gun
and bend it around something round or maybe
hammer some nails into a bit of old plywood and
use them as a 90 degree guide.

I am replacing the gas pipe that was used to run
power from house to garage in 1976 with the correct
stuff, so needs a 90 degree bend at each end to fit
a metre wide path, before re-instating the path
(dug up for other reasons).

Andrew
Why aren't you using SWA cable?

ahem, I guess 'cos he is "replacing the gas pipe


ahem ahem, and what's inside the "gas" pipe? ;-)

In message , Andrew
writes
Has anyone done this ?.

I have a 22mm bending spring intended for 22mm copper
and it is a fairly loose fit.

I was going to heat the pipe with my hot air gun
and bend it around something round or maybe
hammer some nails into a bit of old plywood and
use them as a 90 degree guide.

I am replacing the gas pipe that was used to run
power from house to garage in 1976 with the correct
stuff, so needs a 90 degree bend at each end to fit
a metre wide path, before re-instating the path
(dug up for other reasons).

Yes. I only heated the inside of the bend in stages. Applying force
causes a kink to form. Allow that to cool before starting the next. Not
hugely pretty.
Electric paint stripper with slotted nozzle.

--
Tim Lamb

On 30/11/2020 15:17, Tim Lamb wrote:
In message , Andrew
writes
Has anyone done this ?.

I have a 22mm bending spring intended for 22mm copper
and it is a fairly loose fit.

I was going to heat the pipe with my hot air gun
and bend it around something round or maybe
hammer some nails into a bit of old plywood and
use them as a 90 degree guide.

I am replacing the gas pipe that was used to run
power from house to garage in 1976 with the correct
stuff, so needs a 90 degree bend at each end to fit
a metre wide path, before re-instating the path
(dug up for other reasons).

Yes. I only heated the inside of the bend in stages. Applying force
causes a kink to form. Allow that to cool before starting the next. Not
hugely pretty.
Electric paint stripper with slotted nozzle.

much cheaper to buy two 90 degree bends and some solvent weld...


--
In a Time of Universal Deceit, Telling the Truth Is a Revolutionary Act.

- George Orwell

In message , The Natural Philosopher
writes
On 30/11/2020 15:17, Tim Lamb wrote:
In message , Andrew
writes
Has anyone done this ?.

I have a 22mm bending spring intended for 22mm copper
and it is a fairly loose fit.

I was going to heat the pipe with my hot air gun
and bend it around something round or maybe
hammer some nails into a bit of old plywood and
use them as a 90 degree guide.

I am replacing the gas pipe that was used to run
power from house to garage in 1976 with the correct
stuff, so needs a 90 degree bend at each end to fit
a metre wide path, before re-instating the path
(dug up for other reasons).
Yes. I only heated the inside of the bend in stages. Applying force
causes a kink to form. Allow that to cool before starting the next.
Not hugely pretty.
Electric paint stripper with slotted nozzle.

much cheaper to buy two 90 degree bends and some solvent weld...

Indeed.

I wanted an 18" or so radius and an easier push through for the draw
wire. Inspection bends are fine if you have access and the cable is
happy at that radius.



--
Tim Lamb

On 30/11/2020 14:44, Andrew wrote:
Has anyone done this ?.

I have a 22mm bending spring intended for 22mm copper
and it is a fairly loose fit.

I was going to heat the pipe with my hot air gun
and bend it around something round or maybe
hammer some nails into a bit of old plywood and
use them as a 90 degree guide.

I am replacing the gas pipe that was used to run
power from house to garage in 1976 with the correct
stuff, so needs a 90 degree bend at each end to fit
a metre wide path, before re-instating the path
(dug up for other reasons).



another vote from me for swept bends


--
Robin
reply-to address is (intended to be) valid

In article ,
Robin wrote:
On 30/11/2020 14:44, Andrew wrote:
Has anyone done this ?.

I have a 22mm bending spring intended for 22mm copper
and it is a fairly loose fit.

I was going to heat the pipe with my hot air gun
and bend it around something round or maybe
hammer some nails into a bit of old plywood and
use them as a 90 degree guide.

I am replacing the gas pipe that was used to run
power from house to garage in 1976 with the correct
stuff, so needs a 90 degree bend at each end to fit
a metre wide path, before re-instating the path
(dug up for other reasons).



another vote from me for swept bends

If you're going to use bends with conduit you'll need to create new
threads. Why not hire a proper conduit bender and the tools to do all this?

Bending 22mm copper is hard enough work. Bending steel without the correct
tools I'd say getting on for impossible.

--
*Why isn't 11 pronounced onety one? *

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

On 30/11/2020 15:58, Dave Plowman (News) wrote:
In article ,
Robin wrote:
On 30/11/2020 14:44, Andrew wrote:
Has anyone done this ?.

I have a 22mm bending spring intended for 22mm copper
and it is a fairly loose fit.

I was going to heat the pipe with my hot air gun
and bend it around something round or maybe
hammer some nails into a bit of old plywood and
use them as a 90 degree guide.

I am replacing the gas pipe that was used to run
power from house to garage in 1976 with the correct
stuff, so needs a 90 degree bend at each end to fit
a metre wide path, before re-instating the path
(dug up for other reasons).



another vote from me for swept bends

If you're going to use bends with conduit you'll need to create new
threads. Why not hire a proper conduit bender and the tools to do all this?

Bending 22mm copper is hard enough work. Bending steel without the correct
tools I'd say getting on for impossible.


Its plastic conduit :-). I wasn't aware that swept bends were
available for 25mm conduit. This is DIY, so bending with a
bending spring (or filling with sand) is what we do, surely.

On Monday, 30 November 2020 at 14:44:13 UTC, Andrew wrote:
Has anyone done this ?.

I have a 22mm bending spring intended for 22mm copper
and it is a fairly loose fit.

I was going to heat the pipe with my hot air gun
and bend it around something round or maybe
hammer some nails into a bit of old plywood and
use them as a 90 degree guide.

I am replacing the gas pipe that was used to run
power from house to garage in 1976 with the correct
stuff, so needs a 90 degree bend at each end to fit
a metre wide path, before re-instating the path
(dug up for other reasons).

Andrew
Why not buy, borrow or hire the correct bending spring for 25mm pvc conduit? If the jobs worth doing it's worth doing right. Personally I'd bury a run of much larger flexible ducting and leave a draw string in the duct as well as the cable you are going to use.

In article , John J
wrote:
On Monday, 30 November 2020 at 14:44:13 UTC, Andrew wrote:
Has anyone done this ?.

I have a 22mm bending spring intended for 22mm copper and it is a
fairly loose fit.

I was going to heat the pipe with my hot air gun and bend it around
something round or maybe hammer some nails into a bit of old plywood
and use them as a 90 degree guide.

I am replacing the gas pipe that was used to run power from house to
garage in 1976 with the correct stuff, so needs a 90 degree bend at
each end to fit a metre wide path, before re-instating the path (dug
up for other reasons).

Andrew
Why not buy, borrow or hire the correct bending spring for 25mm pvc
conduit? If the jobs worth doing it's worth doing right. Personally I'd
bury a run of much larger flexible ducting and leave a draw string in the
duct as well as the cable you are going to use.

when walking to the Post Office early I saw some people wrestling with 50mm
flexible conduit near someone's gateway. On the way back I saw it was for
an electrically operated gate.

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle