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 Post subject: Prebent Tubing
PostPosted: January 19, 2019, 6:09 am 
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Joined: December 6, 2017, 2:20 pm
Posts: 125
Location: San Jose, California
Hi Guys,

I am doing the rear bulkhead or the boot of the frame. The haynes roaster plan asks for 19mm tubing at a radius of 84mm. I was wondering if theres a place online where I can buy prebent elbows and just weld them to straight tubing. A lot easier than buying a bender or making a jig for it.


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 Post subject: Re: Prebent Tubing
PostPosted: January 19, 2019, 1:19 pm 
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Joined: April 22, 2010, 4:43 pm
Posts: 420
Location: Livermore, Calif.
The McSorley drawings show this tube to be 2.0" Radius at the outer surface of the bend. See drawing below. Columbia River Mandrel Bending offers a 3/4" diameter mandrel bent, 180 degree piece that is a 1.75" R at the centerline. See attached link.

http://www.mandrelbends.com/mandrel-bends/mild-steel-16-gauge/0-75-mild-steel-1-75-radius-16-gauge-180-deg-mandrel-bend.html

This is what I used and it works great.

Cheers,
Roy


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 Post subject: Re: Prebent Tubing
PostPosted: January 20, 2019, 2:49 am 
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Joined: December 24, 2007, 5:11 am
Posts: 1304
Location: Seattle area
: :D :D

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 Post subject: Re: Prebent Tubing
PostPosted: January 20, 2019, 2:54 am 
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Joined: December 24, 2007, 5:11 am
Posts: 1304
Location: Seattle area
: :D :D

The cost of a bender to bend these in itself would be prohibitive unless you could really make heavy use of it. The cheapies won't cut it. These are a bargain for just 2-4 bends.

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 Post subject: Re: Prebent Tubing
PostPosted: January 22, 2019, 11:47 pm 
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Joined: June 13, 2014, 11:55 am
Posts: 88
I used the corners of a repurposed ping pong table.
I am sure you could use some other furniture bends.
Locost style..


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 Post subject: Re: Prebent Tubing
PostPosted: October 26, 2022, 12:18 pm 
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Joined: January 14, 2021, 12:19 pm
Posts: 113
Location: San Dimas, CA
Thanks for that link.
How about the upper corners? There is a place where can I order them, or you guys using the same thing at all four corners?

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