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#64126 - 03/31/06 02:09 PM bending pvc  
GETELECTRIC  Offline
Member
Joined: Oct 2003
Posts: 172
toronto canada
Hey has any body used the slinky type coil that is inserted into pvc conduit and then you bend it just like emt,looks pretty good.


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#64127 - 03/31/06 02:32 PM Re: bending pvc  
Amazingmg  Offline
Member
Joined: May 2005
Posts: 42
Florida, USA
I saw those advertised in EC magazine.

Looks neat, but do they work?

Enquiring minds want to know.


#64128 - 03/31/06 03:44 PM Re: bending pvc  
steve ancient apprentice  Offline
Member
Joined: Mar 2005
Posts: 169
west springfield,mass
I conned my boss into buying that a month ago while doing work in a greenhouse. He did not want to spend the money for it. Cheap is what he is. He bought it anyway and after useing it he said it was one of the best things he ever got. Of course he said it was his idea. They work great. I highly reccommend it.


#64129 - 03/31/06 04:03 PM Re: bending pvc  
Steve Miller  Offline
Member
Joined: Aug 2001
Posts: 325
Loudoun Cty, VA
I don't like them. They seem to work but about every other bend the pipe gets that white tint to indicate that it has been stressed beyond limits. I never read the specs to see if this color change is technically a problem but I don't trust it.


#64130 - 03/31/06 05:22 PM Re: bending pvc  
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
Steve heat the pipe more.


Bob Badger
Construction & Maintenance Electrician
Massachusetts

#64131 - 03/31/06 06:23 PM Re: bending pvc  
Larry Fine  Offline
Member
Joined: Feb 2005
Posts: 693
Richmond, VA
Heat???


Larry Fine
Fine Electric Co.
fineelectricco.com

#64132 - 03/31/06 06:34 PM Re: bending pvc  
caselec  Offline
Member
Joined: Apr 2002
Posts: 558
San Jose, CA
I have seen them at the supply house counter with scraps of pipe for demonstration but haven’t personally tried one. Most of the bends customers had done looked to have a very short radius. I’m not sure that you could easily make an accurate bend such as an offset since you are required to over bend the pipe to make up for substantial spring back. I also don’t like the look of the bends but I guess looks don’t matter if the pipe is being used underground.

I use a hot box for most small PVC bending. Last year I purchased one of the Hot Bend torches for a job that required many customer bends in 3” pipe and would have say that it was a very good purchase.

Bob, I think the idea behind theses springs is not to use any heat. I’m not use that they would be any better than using a standard pipe bender.

Curt


Curt Swartz

#64133 - 03/31/06 06:58 PM Re: bending pvc  
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
[quote]Bob, I think the idea behind theses springs is not to use any heat. [quote]

Thanks for the info, I did not know that.

I saw them at the supply house and assumed you used them with heat.

Now that I know that I still say heat the pipe more. [Linked Image]

Bob


Bob Badger
Construction & Maintenance Electrician
Massachusetts

#64134 - 03/31/06 07:18 PM Re: bending pvc  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,222
SI,New Zealand
Yeah,
Bending springs are meant to be used with un-heated PVC.
If it's a cold day when you're working with it outside, giving the conduit a rub with the palm of your hand can often produce enough warmth to make the bend easier.
I have springs for 16,20,25 and 32mm dia conduit.
Bending the conduit "under" your knee-cap is a pretty common technique here in New Zealand. [Linked Image]


Let's face it, these days if you're not young, you're old - Red Green grin

#64135 - 03/31/06 07:21 PM Re: bending pvc  
bot540  Offline
Member
Joined: Sep 2004
Posts: 174
Vernon Hills, IL
I just tried one today. Worked ok for offsets and kicks but it didn't make a 90 to well.


Jesus may have been a capenter,but God was an electrician.Genesis1:3

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