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Benders and Bending Which bender is best? How do you use a bender? How do you calculate bends? Everything Bender related...


Benders and Bending Which bender is best? How do you use a bender? How do you calculate bends? Everything Bender related...

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Old 01-01-2018, 04:27 PM
Graham08's Avatar
Graham08 Graham08 is offline
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Join Date: May 2006
Location: Denver, NC
Posts: 1,735
Trick for Bending Thin Square Tube

A project I just finished had some 0.065" wall 1" square tube bent on a 3.5" centerline radius. JD Squared recommends 0.095" wall as the minimum for this die set...but...I decided to try anyway since I've had some success in the past bending thinner than recommended in square.

The first attempt was unsuccessful. The tube slipped in the dies and kinked. But, the light bulb went off based on my experience with my new Hossfeld, where they secure the tube (in their case with a pin through the wall of the tube) if distortion is an issue. JD Squared supplies a clamp with the larger size square dies for the Model 32 to prevent slippage, so I decided to copy their approach to see if I could make it work.

A little bit of 1/2" by 1-1/2" flat stock, and some drilling and tapping resulted in this:



Here are a couple of shots in action:





And the resulting bend:



Now I want to make one for 1-1/2" tube because I think it would limit the amount of distortion in the resulting bend, even at the rated 0.083" wall thickness for that die.

I guess the moral of the story is it's good to be exposed to new and different things because you can apply that knowledge back to stuff you're already familiar with...

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