Re: How to make a rod bending jig

In article <1137510082.937205.316940@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
"mlcorson" <knucklehead1002002@xxxxxxxxx> wrote:

> I've got some 3/8" un-deformed reinforcement rod to bend in a 7"
> radius bending in 180 degrees until the rod is running parallel to
> itself. I only need 6 of them as part of a sculpture I am doing. I
> thought I would get a 7" diameter piece of pipe maybe with a flange
> and weld a post along the pipe, heat the rod, insert the rod between
> the post and pipe and bend until the desired bend is achieved. The
> bends need to be reasonably duplicated.

Have you considered a simple bending fork? Two bolts in a vise, or two
bolts welded to a long handle. Given the scrollwork that can be done
with those, a simple 180 should not be too difficult to pull off, with
perhaps a couple of practice pieces first, in addition to the 6 more you
need.

How did you bend the first one?

I certainly found that bending 1/2" deformed rebar freehand, with no
special attempt to constrain the bends (function, not esthetics)
resulted in bends that were all of pretty similar radius (all bent cold,
with simple leverage). I bent 90 degree pieces for my corners, and 180
degree hooks at the ends of straight bars. I can't see that you need
heat if you actually mean 3/8" bar.

Then again, you could wander into the tool rental and get a rebar bender
for an hour or two. Those have rolls to constrain the bend to a
particular radius.

--
Cats, coffee, chocolate...vices to live by
.

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