say 5" to 8" diameter size curves. There are things that do this
for the electrical industry to curve conduit but conduit is about
3/4" tubing. Does anyone know where to get something to use with
I don't know of a ready-made tool for that, but you could make a
circle of plywood to wrap around pretty easily. Put it on a base, put
some sort of clamp for the first end of wire - a screw-down piece of
metal would do it - and just wrap it around. If your wire is longer
than needed, it will give you leverage, and you won't have to try to
get the very end rounded, in the large sizes. And it will tend to
spring back, but I'd think you could make a smaller circle with a
little experimentation so it springs back to just the size you want.
You could put some handle on an axle in the center, too, so when you
turned the handle it would wrap the wire around - pretty easy to do
but probably just doing it by hand would be easy enough.