Never ending run on a Sweep

Hello all,

I am trying to sweep a circle along a curve but the run never ends (let it run for 4 hours while I was busy with other things). The Curve has a flat spot near the middle and I think that is whats casing the problem. I have attached the rvt and dyn files. I can get the sweep to work on a similar curve without the flat spot. Do any of you have a suggestion?

test_2.dyn (31.5 KB)
spiral.rvt (1.0 MB)

You may be right in your assumption as the same happens on my PC also (hang).
You could convert the geometry from a Polysurface as this runs pretty quickly.


Thanks Ewan,

That looks like it will solve the problem indeed.
Thanks for taking a look.