Bending 90 in 20mm or25mm conduit

[sparahawk]

well until you cant physically put ur finger in any further.

 

[telectrix]

oh, you didn't say to pull your finger out before bending

 

[VoltzElectrical]

i haven't bent conduit for a good 18 months, such has been the need, or not as the case has been. Every time I get put on it, I mess up a couple of bends, over or under, but cut off the bend and start again or cut and thread if too long.

I would like to make the point here, perhaps I'm getting senile, But I can't honestly recollect the EXACT method for doing it without a former and a length of conduit in front of me.

You measure the distance from the back of the bend to the end of the pipe, then put it in the former, aligning with a set square, unless you use the mark, then you deduct, or add 50mm (can't remember) or if you turn the tube around you do the opposite, lalalalala

Look. When it comes to it, I am the bull locks at doing it (it all comes back when you get the materials and tools in front of you -it makes sense when you're looking at it). but on here??

The only thing that makes sense is going to get another beer from the fridge.

I didn't learn bending tube from a forum. i learnt it in site..

AND SO SHOULD YOU YOU LAZY GIT.

GET SOME TUBE AND GET BENDING.

WHEN YOU WORK IT OUT, YOU CAN PAT YOURSELF ON THE BACK.

GOOD LUCK/

 

[madmac]

Cheers and amen! Lol.

 

[malcolmsanford]

The secret to a good conduit 90 is to make sure that the saddles on the ceiling/wall are well fixed, as I can count on 1 hand the amount of walls/ceilings that are actually 90 degrees, so often you end up with a lovely springy piece of conduit that fitted with the apprentice pushing up on it with a broom while you tapped the saddles on with a hammer.

 

[Farmelectrics]

or is it a mates job as someone previously said wasnt me tho

 

[SPARKY89]

Please can some one help me please haven't done steel conduit for a while. What's the best way to get a 90 bend at the right length 1st time???

as written its a time consuming exercise each sparky / electrician is different from how the form the lengths me I just do two simple messures then add 2" inches (25mm) and form with a 2ft lengh of 4 by 2 with a 20mm hole or 25mm hole and form from this works pretty well for me granted im over or under by 5 / 10 mill but I would rather have it and not need it then need it and not have it :wink_smile:

 

[telectrix]

you must be good with a spade as well, as you've dug this thread up from 2 years ago. :45:

 

[flyingsausage]

The main thing to do is to mark the former in the right place,no one seems to be able to do that these days,if the mark is right then your conduit will be the right length.
Everyone has different methods, and many sparks have never had to do metal conduit.

I can go for years without doing conduit and it takes a couple off bends,offsets and a bubble to get back into the swing of it.

 

[rmc86uk]

The main thing to do is to mark the former in the right place,no one seems to be able to do that these days,if the mark is right then your conduit will be the right length.
Everyone has different methods, and many sparks have never had to do metal conduit.

I can go for years without doing conduit and it takes a couple off bends,offsets and a bubble to get back into the swing of it.

Agreed, When you don't do it for months it takes a while to get back bending but once into it I love it!

 

[flyingsausage]

I hate metal conduit,I served most of my time doing it.
The last time I done it I had the usual few disasters,but after marking the former in the right place away I went.
As long as you do not try anything fancy like a bend and double set in the first length it soon comes back to you.

Although it can be quite funny watching the 'young super spark know it all's' that have only done conduit at college get put on it and see them really struggle and realize it is a bit harder than plastic conduit with the manufactured bends.

Another thing that young sparks can't do is form an offset,a kick or a bend in trunking,if it is not a manufactured bend or set then they are lost,and they have never heard of fish plates.

 

[somersetsparks]

I hate metal conduit,I served most of my time doing it.
The last time I done it I had the usual few disasters,but after marking the former in the right place away I went.
As long as you do not try anything fancy like a bend and double set in the first length it soon comes back to you.

Although it can be quite funny watching the 'young super spark know it all's' that have only done conduit at college get put on it and see them really struggle and realize it is a bit harder than plastic conduit with the manufactured bends.

Another thing that young sparks can't do is form an offset,a kick or a bend in trunking,if it is not a manufactured bend or set then they are lost,and they have never heard of fish plates.

The last bit of tube I did, had a double bubble 2ft apart, one over 20mm, one over 25mm followed by a 90' and a small set, all on show in one of her majestys prisons, they had a 'consultant' decide that an extra emergency was required, i suppose so escaping prisoners wouldn't fall down the stairs...

Anyway must have looked a bit shifty making my way to the skip with the 'fails' or as I like to say 'practises'

Good luck with a lot of practise you'll be able to do it by eye

 

[shanky887614]

I hate metal conduit,I served most of my time doing it.
The last time I done it I had the usual few disasters,but after marking the former in the right place away I went.
As long as you do not try anything fancy like a bend and double set in the first length it soon comes back to you.

Although it can be quite funny watching the 'young super spark know it all's' that have only done conduit at college get put on it and see them really struggle and realize it is a bit harder than plastic conduit with the manufactured bends.

Another thing that young sparks can't do is form an offset,a kick or a bend in trunking,if it is not a manufactured bend or set then they are lost,and they have never heard of fish plates.

what are these plastic bends you speak of?

its suprising how many people struggle just to measure a 90 long enough.

i wouldnt mind making my own trunking bends but part of the spec in hospitals is to use premade.

everything else we make the bends/sets for (galv+plastic,tray,basket etc)

 

[GLENNSPARK]

steel conny bending
here:

View attachment Galv Guide P1.pdf

View attachment Galv guide P2.pdf

View attachment Galv Guide P3.pdf

 

[Thefailsafe2012]

If your a weed like me try and nick a 4ft scaff tube from somewhere and use it as extension bar on the handle, stops you from just doing press ups on the bar :joker: