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  #21  
Old 03-03-2013, 05:04 PM
Hangman's Avatar
Hangman Hangman is offline
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Had to straighten some 3/16" brake line this weekend and built a quick straightener like this. Got some 1 1/4" steel ball bearing rollers and gave it a try. One thing I noticed is with too much pressure, the tubing coils back up again. Too little and it does almost nothing.

The question: Does anybody think by having two rollers directly across from each other at the ends would help?

Like this:

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  #22  
Old 03-03-2013, 06:43 PM
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TheBandit TheBandit is offline
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How many rollers does your current setup have? I thought about doing what you're showing too, but check your rollers first to see if they will touch each other before contacting the tube.
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  #23  
Old 03-03-2013, 07:00 PM
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Hangman Hangman is offline
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Right now, just five. That's all they had in stock. I plan on picking more up as soon as they come in. I don't think they will touch, but if they do, the four outside ones can be milled down a bit (just on the "flanges").

I think what I'm going to do is get more rollers, then mill out a better mount for them. That way I know for sure all are trued up real good. When that happens, I'll post some pics and the results.

I won't use it all the time, but it'll be nice to have when I need it. Also need to make one for 3/8" aluminum tubing.
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  #24  
Old 03-03-2013, 07:44 PM
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R.DesJardin R.DesJardin is offline
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The rollers need to be staggered, this is from the wire straighteners we had to straighten 3/8" coiled wire.
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  #25  
Old 03-03-2013, 08:21 PM
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Now that I look at that again, the double roller at the ends isn't going to do a thing to prevent over-bending. I think it's just a fine line with the tension between straight and curving the tubing again. Maybe focusing attention on the adjustments of the straightener will yield better results. Getting that fine line to open up some.
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  #26  
Old 03-04-2013, 07:49 AM
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R.DesJardin R.DesJardin is offline
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Check these out. http://www.google.com/url?sa=i&sourc...62487701224688
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  #27  
Old 03-04-2013, 10:31 AM
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bullnerd bullnerd is offline
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I know how to do the spinning trick like nutzforsand mentioned,but I use a lathe.

Pretty cool if you ever get a chance give it a try.

Put one end in the spindle, spinning real slow, grab the tube with a shop towel up near the chuck and apply pressure with your thumb (like your trying to bend it.) as you slide the towel away from the chuck. It will come out perfectly straight. Longest i've done is about 6'.

Nice job Bandit,I will keep that in mind.
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  #28  
Old 02-23-2017, 04:36 AM
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blancawilliams blancawilliams is offline
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The video is very helpful. Thanks

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Last edited by blancawilliams; 03-17-2017 at 06:00 AM.
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