Bending plastic conduit

[sparkymarka]

It’s not white ….

 

[morqthana]

It's exposed inside a dwelling, so it's on show. Black PVC is aesthetically unpleasing.

And if there's a lot of glass, it will get hot and buckle or sag.

Should have been steel, galvanised or stainless.

 

[pete01]

It's exposed inside a dwelling, so it's on show. Black PVC is aesthetically unpleasing.

And if there's a lot of glass, it will get hot and buckle or sag.

Should have been steel, galvanised or stainless.

Oh...I thought you meant wrong to what the OP was asking.

 

[morqthana]

That's because the lazy sod did not pour cold water over the bend. Out on site a good sparks has to think on his feet and quickly too.

 

[morqthana]

Oh...I thought you meant wrong to what the OP was asking.

Ah - no, sorry.

 

[SUNRAY]

Anyone notice this guy rubbed over a longer length than post#28?
It turned out ok but I find I get better results warming only the area I want to bend.

 

[ebee]

How does a gentle uniform heating with a hair dryer or a blowlamp work out in practice.
If you have enough dry sand and a couple of rubber bungs it can help make a bend. Gentle hot water can work too (on a local area, not a 3m length though).
Once formed, I would recommend cooling with say cold water if possible.

One of the untidiest messes I saw with plastic tube was a bit of surface mounted plastic plumbing.
all nice and neat lots of pieces and elbows, tees and stand off clamps.
A real pro looking job - until hot water ran thru to the radiators, then it bcame a right mess.
I did suggest a bit of thoughtful planning to make all opposing runs pretty equal and only the mid section clamps fully tightened, all other clamps a bit slack to allow some slide movement, it did improve things noticeably but not perfectably though!

 

[Munroast]

How does a gentle uniform heating with a hair dryer or a blowlamp work out in practice.
If you have enough dry sand and a couple of rubber bungs it can help make a bend. Gentle hot water can work too (on a local area, not a 3m length though).
Once formed, I would recommend cooling with say cold water if possible.

Why ? is this just time thing ?

the one i bent earlier (few posts above) I heated it with hot air gun until nearly too hot to touch, I just gently formed it with my hands and let it air cool - it seems fine, and it air cooled very rapidly until stiff again . would have made a nicer job with a spring (one now on order, don't know why I have no jobs planned, but nice to have if i ever need it) But seriously, even without spring its a reasonable job

And the white conduit I have, I really can't see how I would ever get any worthwhile heat into it with a few rubs with a cloth, may be my conduit is the wrong stuff ?

 

[pete01]

It doesn't need to be mega hot, just put it somewhere warm before using it, the chap in the video put it in the sun, when I've worked on schools and colleges etc I would store it in the boiler room.

If it's cold it will shatter

 

[pete01]

If you ever use black conduit outside use expansion couplers or it will definitely sag in the sun.

 

[morqthana]

And the white conduit I have, I really can't see how I would ever get any worthwhile heat into it with a few rubs with a cloth,

So despite videos and what people tell you, you don't believe it works and you won't try it.

OK.

 

[Munroast]

So despite videos and what people tell you, you don't believe it works and you won't try it.

OK.

what an utterly stupid response that clearly demonstrates you are not following the thread or have an inability to comprehend

OK

 

[SUNRAY]

Why ? is this just time thing ?

the one i bent earlier (few posts above) I heated it with hot air gun until nearly too hot to touch, I just gently formed it with my hands and let it air cool - it seems fine, and it air cooled very rapidly until stiff again . would have made a nicer job with a spring (one now on order, don't know why I have no jobs planned, but nice to have if i ever need it) But seriously, even without spring its a reasonable job

Let's see a picture

And the white conduit I have, I really can't see how I would ever get any worthwhile heat into it with a few rubs with a cloth,

With the heat we've been experiencing recently it doesn't even need to be warmed.
When your spring arrives try it with and without rubbing it

may be my conduit is the wrong stuff ?

I doubt it, unless it's any of the flimsy stuff that was around a few years back. However that would bend but wouldn't hold it.

 

[morqthana]

what an utterly stupid response that clearly demonstrates you are not following the thread or have an inability to comprehend

OK

So what am I not comprehending when I read

I really can't see how I would ever get any worthwhile heat into it with a few rubs with a cloth

?

 

[pete01]

Doesn't even rub it this chap...