I had to bend some 1/8" stainless rod the other day and was having trouble getting a nice uniform bend.
I came up with this tool which worked very well.
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As can be seen, the rod sits in the groove in the handle and the rod wraps around the dowel pin. 90 degree bends are straightforward. I could probably bend to a more acute angle but would need to relieve the tool slightly to clear the back dowel.
You could also use something similar for bending metal tube; to stop it collapsing I have used nylon line trimmer cord inside to provide a minimum diameter opening.

Michael
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