Re: Advice in cold bending rod
[Re: Wolfdog91]
#7620697
07/06/22 02:28 PM
07/06/22 02:28 PM
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chas3457
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Practice practice practice. Put it in the vice and bend it. If it doesn't line up with your mark, adjust your mark on the next one, till you get it right. Build your self a bending machine. No doubt in my mind that you can do that Charlie
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Re: Advice in cold bending rod
[Re: Wolfdog91]
#7620700
07/06/22 02:33 PM
07/06/22 02:33 PM
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GREENCOUNTYPETE
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if you measure mark and bend then measure where you actually came to
so say you measure 7 mark and bend over the vice what does it actually come to 7 1/4 what ever it comes to I would think you need to take off the 7
so say it is 7 1/4 you would take the 1/4 off and mark at 6 3/4 so that bent it is 7
your making a radius so figuring in for the radius is necessary when I was bending a lot of conduit I knew what my measurement was , I don't recall all these years later
a couple test bends should tell you
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Re: Advice in cold bending rod
[Re: Wolfdog91]
#7620714
07/06/22 02:54 PM
07/06/22 02:54 PM
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BigBob
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You're going at it from the wrong side. Make the frame FIRST, then make the body wire fit it. Don't forget you can get sharper corners with hardware cloth body material, than with the frame material.
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Re: Advice in cold bending rod
[Re: Golf ball]
#7620716
07/06/22 02:56 PM
07/06/22 02:56 PM
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Wolfdog91
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If you have a heavy welding table and your cages are the same size every time the simple answer is build a jig on your table . It might take a time or two to get it right but once you’ve got it your golden for the duration.
I would think if your cages are 7”x10” it would be a matter of building the jig a quarter inch smaller ( depending on rod size ) say 6” 3/4 x 9” 3/4 and 6”3/4 x 9”3/4 , weld 4 pieces of angle on the welding table and start bending. That’s assuming your using 3/16” rod . Well that's the thing I'm probably going to be making cages that are all over the place as far as measurements lol. Really looking at making jigs however.think I'll go buy th school and see if my old welding teacher has some scrap plate I can get . Now what you said about building it smaller is what got me. You said build it 1/4" smaller if I was using 3/16. Why exactly? Wouldn't I bud then 3/16th smaller ? And since I'm building thea out of 1/4 would I build them 1/2 smaller ??
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Re: Advice in cold bending rod
[Re: Wolfdog91]
#7620806
07/06/22 05:48 PM
07/06/22 05:48 PM
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Scott__aR
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Wolfdog91, yes there are formulas for developing length adjustments for the bend radius. Unfortunately my engineering resources are all packed up in storage.
For each bend the allowance will always be shorter based on: the elongation material properties of the rod you are bending, size of the bend radius, rod diameter, and the amount that the neutral axis moves from the theoretical bend axis due to compression around the inner material fibers and tension ( stretch) in the outer material fibers (think of the rod as being made up of laminated layers of material.)
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Re: Advice in cold bending rod
[Re: Wolfdog91]
#7620809
07/06/22 05:50 PM
07/06/22 05:50 PM
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J.Morse
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Wolfie, why do you have to do it cold? Couldn't you use a small torch (map gas would be quite fast) to heat the small spot you want to bend, then quickly get it in a good vise and hammer it over before all the "red" is out of it.
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Re: Advice in cold bending rod
[Re: Jumperzee]
#7620968
07/06/22 09:32 PM
07/06/22 09:32 PM
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TEpnw
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Wolfie do they have to be bent? Along the lines of above questions, why not just cut everything and build a little fixture plate to tack it all together? I’ve done this on my swimthrough cages and it works quite well!
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Re: Advice in cold bending rod
[Re: Monster Toms]
#7620978
07/06/22 09:41 PM
07/06/22 09:41 PM
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~ADC~
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The Count
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First question, What are you bending the rod with?? I have a pair of bolt cutter that have a bender built in that work awesome. I don't know if anyone makes them anymore. I have a huge rebar cutter too that has a bender on it but it's no good for real sharp bends or smaller stock like used in cage traps. Bolt cutters are like these.... https://www.ebay.com/itm/363870976527?hash=item54b8667a0f:g:T7QAAOSwg2ViplEv
Last edited by ~ADC~; 07/06/22 09:53 PM. Reason: added link
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Re: Advice in cold bending rod
[Re: Jumperzee]
#7621005
07/06/22 10:28 PM
07/06/22 10:28 PM
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Wolfdog91
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Wolfie do they have to be bent? Along the lines of above questions, why not just cut everything and build a little fixture plate to tack it all together? Well I've always hav just cut and welded but I kinda wanna get good and bending. Seems every cage maker worth their salt does it so it's something I'd really like to get a good grasp on. Also since I'm running a stick it's a literal nice to just make one weld instead of four
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Re: Advice in cold bending rod
[Re: Monster Toms]
#7621008
07/06/22 10:29 PM
07/06/22 10:29 PM
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Wolfdog91
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First question, What are you bending the rod with?? A vice and a hammer. I tried using I pice of tubing slipped of my rod like a cheater bar but my beinds never looked quite right
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Re: Advice in cold bending rod
[Re: J.Morse]
#7621012
07/06/22 10:36 PM
07/06/22 10:36 PM
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Wolfdog91
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Wolfie, why do you have to do it cold? Couldn't you use a small torch (map gas would be quite fast) to heat the small spot you want to bend, then quickly get it in a good vise and hammer it over before all the "red" is out of it. Well I just doing it cold right now because I don't have an oxy torch yet. I haven't tried map yet for this, how fast is it compared to oxy ? But even then I will kinda stuck on properly laying stuff out for a bend
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Re: Advice in cold bending rod
[Re: Wolfdog91]
#7621026
07/06/22 11:01 PM
07/06/22 11:01 PM
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T-Rex
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Congratulations. It sounds like you have discovered "bending gain".
While I cannot disclose what cost me hundreds of dollars in class courses and experience I will say there is a factor, and it is dependent on radius.
If you figure it out feel free to let some of the other folks on here in on your discovery.
Hint: Perhaps the factor .44 could come into play
Man who mistake shillelagh for fairy wand; see pixie dust, also.
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Re: Advice in cold bending rod
[Re: T-Rex]
#7621035
07/06/22 11:06 PM
07/06/22 11:06 PM
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Wolfdog91
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Congratulations. It sounds like you have discovered "bending gain".
While I cannot disclose what cost me hundreds of dollars in class courses and experience I will say there is a factor, and it is dependent on radius.
If you figure it out feel free to let some of the other folks on here in on your discovery.
Hint: Perhaps the factor .44 could come into play A hint ! Awsome that's all I need now off to YouTube I go !
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