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Flaring Stainless Tubing

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Old Sep 24, 2005 | 12:00 AM
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Default Flaring Stainless Tubing

Is it feasible to flare 3/8 stainless fuel line tubing with a home flaring kit or is the stainless material too hard to do this? I have a piece that needs to be shortened but I want to know if any one has done this before I try it and screw it up. Thanks...
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Old Sep 24, 2005 | 12:25 AM
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I have done it, but I have a Hydralic flaring tool. I think the home tubing flare tool might not be powerful enough to make the flares and also get a good seal.
Try you auto part supplier(o'reilly auto). they might be able to do it, or take it to a car builder near you, surely they could get you in the right direction.

good luck ,
Larry
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Old Sep 24, 2005 | 12:45 AM
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Can you heat stainless up with a torch and then flare it? Will it hurt the stainless to heat it and then let it cool?
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Old Sep 24, 2005 | 01:29 AM
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Originally Posted by JonnHeather
Is it feasible to flare 3/8 stainless fuel line tubing with a home flaring kit or is the stainless material too hard to do this? I have a piece that needs to be shortened but I want to know if any one has done this before I try it and screw it up. Thanks...
S.S. work hardens so when you cut it do not us a tubing cutter but use a cut off wheel and it will flare much easier.
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Old Sep 24, 2005 | 12:53 PM
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Default The flare kit usually says what will work in the instructions.

U can cut the tubing with a hacksaw and file it square but a regular tubing cutter will harden the end. Also use a scraper to debur the end inside and out. U should try to find some scrap for practice as making the first bend is at a critical hieght for the double flare. I like to use lars trick eyeing the die thickness for a gauge.
I also need a table vise to clamp the tubing vise just for carbon steel - SS would need greater force. U may need a cheeter bar to help with the turning.
Myself i would not mess with the temper - though normalizing is common practice on aircraft chrom-moly.
Hope this can help. cardo0

Last edited by cardo0; Sep 24, 2005 at 12:55 PM. Reason: clarification
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Old Sep 24, 2005 | 01:06 PM
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Depending on where you got the tubing it might not be possible to flare it. Some kinds are hard and not meant to be flared.
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Old Sep 24, 2005 | 01:12 PM
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We got a full S/S brake line set for a vette, 3 flares had hairline cracks...wouldn't seal. Never again...
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Old Sep 24, 2005 | 03:10 PM
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I like bundy, easy to bend, easy to flare, more crack resistant than normal steel, I may go ss on the vette, dunno yet
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