So I have to bend this accurately.

woodchucker

woodchucker

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I picked up 2 of these to bend. One to make a mistake on and one to get it right.
The black one is a custom sized one for the drawers. I need to get the new one to the same size. The new handle is thicker. Even heating red hot to test it out, it was hard to straighten, and did not wind up in the direction I wanted, it skewed off. I used a sleeve to bend it.

So a couple of things.
I have a big vise, a hydraulic press , with a light weight V block (angle iron), a tool steel v block (for milling and stuff). I have steel to make a home made diacro type bender, etc.

I want to bend it accurately, with the least amount of side project time. What would you do to make it happen (using the things I have avail as described)?
 

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Had you seen this video on YT?? Simple, yet effective, easily mountable in a big bench vice and could be scaled up to suit your needs.

 
There are also a few ToT videos on bending metal. He explains, in a fairly simple way, the geometry of bends and shows some of the maths. I think the explanation is in this one (I know it's about sheet metal but I would imagine the same basic principles apply):

Here are the other ones I found:


 
When you say custom size, do you mean metric? Looks kinda like a standard 96 mm D pull
Martin
 
The pin based bender or ToT ‘universal bender’ work the same. The pin bender has a fixed bend radius, the universal variety has cylinders that drop over the center pin for larger radius. Some care required to get the legs parrallel.

There are general guidelines, but I’ve always made a test bend in the material to use, first making careful marks in the rod so I can then measure the outcome and plan accordingly.
 
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