ECN Forum Forums Technical Discussion Electrical Theory and Applications Need help with bending calcs

Benfield's is outstanding.

I can't recommend it too highly.

Umm OK, like you can bend galvanised thick-walled pipe with one of them?

In the end it turned out OK, I did as Greg suggested and marked the bit of scrap and found the take-up.

I also have to agree with Greg about the number of bits of pipe that are laid to waste in any given job.

The one good thing about the Bramley benders is that if you need to do a compound bend (ie: 2 bends in the same length of pipe), all you do is level the bender and the pipe with a level on each end of the pipe and one on the bender, you don't get a cork-screw, if you are lucky, or you hold your face the right way or the wind doesn't change during the bend.

Trumpy.,

I have the hickey bender and this what I will recomonded to you is make serveal small step for each bend and do not try to bend too much otherwise you will make a kink in there.

The numbers of "hits or movements " on hickey bender it will depending on the amout of bend the last 90° bend with 3/4 hickey it took me 22 hits to make a nice bend I know it is alot but that is the only way you can do that without kinking it.

Otherwise a standard conduit bender will work just fine and it will be done quick.

There are few tricks I done with electrique benders and hydrallics { it will be much easier If I can catch ya in the loft { chat room } and expain how this work out }

Merci,Marc

Be careful using Ugly's. The offset tables are the same as the Benfield Bender and assume pipe is bent like a broken line when in fact it is bent on a radius. For pipe sizes larger than 1 inch or for IMC and Rigid this is a killer for pre cutting and bending.
Reference:
http://www.electrician2.com/electa1/offset.html
The same principle apply to 90 degree bends. The best practice is to know your bender by test bending and measuring the take ups, etc.