tube bending

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Johnny B.
Posts: 5
Joined: Sat Oct 04, 2014 10:04 am

tube bending

Post by Johnny B. » Mon Nov 10, 2014 7:46 pm

Does anyone have any experience in making tight bends of 1/8' BRASS TUBING...I don't want to kink this stuff...its pricey. Thanks

sabin
Posts: 129
Joined: Wed May 11, 2011 7:31 pm
Location: Paso Robles CA

Re: tube bending

Post by sabin » Mon Nov 10, 2014 7:54 pm

K&S has these. Found mine at Hobby Lobby. I haven't used them yet.
http://www.acehardware.com/product/inde ... pla_998603

cp4449
Posts: 569
Joined: Tue Jun 06, 2006 10:54 am
Location: Granada Hills

Re: tube bending

Post by cp4449 » Mon Nov 10, 2014 8:09 pm

I have a set of those. I have not done 1/8" stuff, but no kinks with 1/4" stuff
Christopher P. Mahony
Los Angeles Live Steamers
1 inch scale member

Johnny B.
Posts: 5
Joined: Sat Oct 04, 2014 10:04 am

Re: tube bending

Post by Johnny B. » Mon Nov 10, 2014 8:14 pm

Thanks for the prompt comments guys!

STRR
Posts: 380
Joined: Thu May 24, 2007 9:01 pm
Location: Westminster, CO

Re: tube bending

Post by STRR » Mon Nov 10, 2014 8:41 pm

I really like the spring benders. I believe they are much better if you need anything besides a straight bend.

Two other methods that work very well. One: Fill the tube with fine sand, pack it as tight as you can by tapping on the sides and ends. OR; Two: Fill the tube with water, freeze it leaving one end open for expansion. Then, bend around a mandrel that will give you the finished dimension you're needing.

I have seen 20" diameter pipe bent with the sand method. Stand the pipe up with a crane, put a plug in the bottom end, drop the pipe into a hole in the ground, which is next to a silo filled with fine, dry sand. Fill the pipe, hoist it up and down while the boys beat on the sides with sledge hammers, repeat until the sand does not settle any further. Cap the open end and lay down. They put the bend zone into a kiln to red hot and then onto the bend table. Ropes and winches bend the pipe around forms or pins to get the required bend. Let cool, uncap, and drain the sand out, saving it for reuse.

Good Luck,
Terry

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Dick_Morris
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Joined: Sat Jan 04, 2003 2:09 pm
Location: Anchorage, AK

Re: tube bending

Post by Dick_Morris » Mon Nov 10, 2014 9:06 pm

There were several posts describing some really nice pipework here, about five years ago. Suggest you do a search for it.

chooch
Posts: 567
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Location: East Central Florida

Re: tube bending

Post by chooch » Mon Nov 10, 2014 10:02 pm

Dick Morris,
I just spent about 15 minutes looking for the Tube bending subject on 4 pages with no luck.
I though maybe posting a question like asking on a search site -did not see that available on here.
Would you have any other ideas?
Thanks.
chooch

Dick_Morris wrote:There were several posts describing some really nice pipework here, about five years ago. Suggest you do a search for it.

Bill C
Posts: 242
Joined: Fri Aug 08, 2008 9:14 pm
Location: Pensacola, FL

Re: tube bending

Post by Bill C » Mon Nov 10, 2014 10:55 pm

The thread you want is called The Art of Tube Bending, by Chris Hollands. Fantastic work, excellent tutorial. Good luck!

Bill C.

redneckalbertan
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Location: South Central Alberta

Re: tube bending

Post by redneckalbertan » Mon Nov 10, 2014 11:12 pm

Last edited by redneckalbertan on Tue Nov 11, 2014 7:24 am, edited 1 time in total.

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cbrew
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Location: Vancouver Wa

Re: tube bending

Post by cbrew » Mon Nov 10, 2014 11:37 pm

I have been flamed by this answer before, but i have always heated the tubing to bend it. it has always yielded smooth bends. just a propane torch and a pair of tig welding gloves.
If it is not live steam. its not worth it.

chooch
Posts: 567
Joined: Mon Dec 09, 2013 11:58 pm
Location: East Central Florida

Re: tube bending

Post by chooch » Tue Nov 11, 2014 7:53 am

Thank you for the link. Very informative / interesting.
Thanks to others for replies also.
chooch


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Fred_V
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Joined: Sun Jan 12, 2003 3:26 pm

Re: tube bending

Post by Fred_V » Tue Nov 11, 2014 8:26 am

chooch wrote:Thank you for the link. Very informative / interesting.
Thanks to others for replies also.
chooch

I took that whole series of posts on tube bending and made a PDF file of it (2 files). Send my a PM with your email address and I'll send them to you.
Fred V
Pensacola, Fl.

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