Bending plastic conduit

[Lamentable]

All the videos I have seen show that you can use a bending spring to bend plastic conduit 90 deg.

Is it possible to bend it only 30 or 45 degrees ?

 

[Scally-Ho]

Got an internal spring? Rub the tube with a thick rag to heat it up, then bend to desired angle. Follow that by pouring cold water over it to rapidly set the bend.

 

[Lamentable]

Thanks. Could I heat it up with a hair dryer?

 

[Scally-Ho]

The rag method ensures uniform heating.

 

[Munroast]

Got an internal spring? Rub the tube with a thick rag to heat it up, then bend to desired angle. Follow that by pouring cold water over it to rapidly set the bend.

as in heat through friction ?
there has to be a better method? immerse in boiling water ?

 

[pete01]

The rag method ensures uniform heating.

I agree, the rag or bottom of t-shirt method is the best way

 

[Scally-Ho]

as in heat through friction ?
there has to be a better method? immerse in boiling water ?

If you found the time to boil water, then you would not be working for me, or at least not for long

 

[morqthana]

as in heat through friction ?
there has to be a better method? immerse in boiling water ?

How the hell are you going to immerse a section of a 3m long tube in boiling water?

I strongly suspect that people questioning the rag method have never tried it.

I've only done it a few times - watched a video, thought "that looks pretty straightforward", tried it, it was pretty straightforward (on the 2nd attempt, 1st one I managed to let the spring slip).

Thanks. Could I heat it up with a hair dryer?

Try using a rag first.

as in heat through friction ?
there has to be a better method? immerse in boiling water ?

Try using a rag first.

 

[morqthana]

Rub the tube with a thick rag to heat it up,

An old towel is ideal.

then bend to desired angle.

The video I watched said to bend it just past the desired angle, and then back a bit.

 

[Scally-Ho]

An old towel is ideal.



The video I watched said to bend it just past the desired angle, and then back a bit.

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.

 

[pete01]

I have never used any water, rub it bend it and get it in place quickly, never fails....

 

[Munroast]

How the hell are you going to immerse a section of a 3m long tube in boiling water?

I thought you were heating the spring up - the whole thing sounded a bit odd

so what are you bending, that white 20mm (?) plastic conduit ?
can you really get enough heat in it by rubbing it up and down ? its an action I imagine I am well trained at but that would be a lot of heat

and are you just dropping a normal 15mm spring (for copper pipe) to stop it kinking

 

[pete01]

I thought you were heating the spring up - the whole thing sounded a bit odd

so what are you bending, that white 20mm (?) plastic conduit ?
can you really get enough heat in it by rubbing it up and down ? its an action I imagine I am well trained at but that would be a lot of heat

and are you just dropping a normal 15mm spring (for copper pipe) to stop it kinking

A 20mm spring

 

[morqthana]

can you really get enough heat in it by rubbing it up and down ?

Yup

 

[Munroast]

ahh - you get proper springs for them !
I'm going to go and try and bend some after my dinner - eems unlikely I will get the heat into it

only have a 15mm spring but that should do