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Old 07-29-2013, 12:06 AM
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Default Need to twist some bar stock.

I am not even back in town from vacation, and already my jobs are all on fire. Most of the issues I can manage. One, however, requires that I custom twist some bar stock. This is for a 4 post bed that the customer wants, but doesn't like the twisted stock that is available. I need to take 2 pieces of 5/8" hot rolled square, and 2 pieces of 3/8" round, stack them sq/rnd rnd/sq, weld the ends together and twist. 10' lengths will work fine. Problem is that I don't know how much force it is going to take to twist. I am hoping to use my Rigid 300 and twist it directly by welding on a stub for the machine end, and a square stub to fit in a reciever tube on the other end, and mounting the whole mess to a WF. I have done plenty of hot and cold twisting, just not 4 bars together.
Any others that have experience doing this, I would welcome any advice.
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Old 07-29-2013, 01:59 AM
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Over the years we've done our share of twisting but, like you, we've never done a bundle that large. All I can say for sure is that it's going to take a pile of torque to do it--exactly how much will depend on how tight you wrap it. We have a Ridgid 300 and my gut tells me it won't have enough oomph to do the job. I could be wrong but that's what I suspect.

I can also say for sure that if you don't have both ends of the apparatus anchored down real good somethings going to be floppin' all over the place when you hit the go switch--would love to see a video...
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Old 07-29-2013, 06:48 AM
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I hope you have a foot pedal on the 300. I would like to see the setup for this for sure. The 300 and 400 machines have big balls so it's really gonna interesting.
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Old 07-29-2013, 07:06 AM
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How bout driving the gear box off of a semi trailer landing gear with your 300? All bolted down to a wf beam.That should give you enough torque to get the job done.
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Old 07-29-2013, 07:23 AM
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I'd be tempted to heat it up in a coal forge and twist it in a vise with a wrench ... but then again, I don't have the machinery you apparently do, and I know just enough to be dangerous!
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Old 07-29-2013, 08:05 AM
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I've twisted 2 side by side and it was hard to keep them together during the twisting. Just weld at the ends will not keep them together in the middle. I think 4 side by side would be trouble. Could you twist them separately and screw them together after twisting? Don't have any ideas on what to use for 4 pieces at once. Seems a 300 would not do it to me.

Be sure to take some pics of your setup and the after twist. We would all like to see how your going to get this done.
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Old 07-29-2013, 08:29 AM
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Quote:
Originally Posted by Walker View Post
I am hoping to use my Rigid 300 and twist it directly by welding on a stub for the machine end, and a square stub to fit in a reciever tube on the other end, and mounting the whole mess to a WF.
If this is what you mean by a Ridgid 300. I doubt it will twist it, that is a lot of steel, but it would try it first, hell even a blind squirrel finds a nut from time to time.
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Old 07-29-2013, 08:43 AM
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Walker,

Just looking on You Tube.

Decorative twist http://youtu.be/GUENGw22EF0

Pineapple Twist http://youtu.be/ueFzWuR5HMQ

Forged cage twist http://youtu.be/2VVdHAB-KgE

Vern
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Old 07-29-2013, 08:48 AM
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I twisted some 1/4 cr round and had trouble getting them to lay evenly and flat. (http://www.shopfloortalk.com/forums/...ad.php?t=36920) I don't know how it will work having different sizes and shapes of material together. I also found that tacking both ends didn't allow the individual "strands" to twist and made it even worse. Will you have enough diameter that you could have a straight core to wrap your square and rounds around? That might help to keep the smaller rounds from falling inside the OD. Just a thought.....

OleDog
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Old 07-29-2013, 09:06 AM
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These folks have some nice pre-twisted bar.

http://www.metalbythefoot.com/onlinestore-6.html

Check out the prices on this big barbed wire stuff from an outfit in Cave Creek, AZ:

http://www.cavecreekdesigns.com/catalog.php?category=2

Edit: video of twisting a big bar. The outfit is in Tempe.

https://www.youtube.com/watch?v=ForKWthpxz8

http://www.creativemetalsaz.com/Crea.../services.html
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Last edited by USMCPOP; 07-29-2013 at 09:23 AM.
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