EMT Conduit crimping tool to make tent poles

[jwmorris]

Post 65 of the above link, I like.

 

[sparc]

My 5 C collet closer would never swage a tube down enough to insert it into the same size. They are made to deflect thin tubing less than a 3, 4 or 6 jaw chuck.

I do have a tube beading tool that I built that might work on stopping a smaller diameter from going into a larger one.

I have only used it for keeping hoses on though. I have used it with copper, steel, aluminum and stainless. It only goes down to 7/16" but can go up to any diameter. The largest diameter stuff I have used it on has been for turbo pluming, 6".

This is what the results look like with EMT

interesting, like rolling a victaulic groove but in reverse.

 

[chim]

1/2" rigid aluminum conduit with threaded couplings would be lightweight and eliminate a lot of work.

 

[Tractor Seabee]

https://www.acwholesalers.com/Hilmor/1839015-Compact-Swage-Tool-Kit-3-8-To-7-8-CS/34175.ac?gclid=CNSt6vHU3rsCFUZqfgodNAIAKA

This one will do 3/4" conduit. Kinda spendy for one project. They make set screw couplings for conduit up to 2". Set one end and screw tight, throw away the other screw.

Ron

 

[bcp]

Someone here might know more or can find out more about this process:

From:
Tubing end reduction

"The Ram style of end forming is created by forcing a dedicated die over the end of the tube and then retracting the die back off the tube. The die is designed to achieve the proper OD and length of the reduction and will only create the OD the die is designed for."

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and a video:

Another style:

http://www.youtube.com/watch?v=KlyaPUXKsCk

Looks similar to the log splitting process, with a die instead of a wedge.



This one crimps the tube while reducing it.

http://www.youtube.com/watch?v=W2QwfYrKbng

Bruce