Hi Larry:

In this case, the minimum bending radius would be 2/3 the thickness of the wire = 1/3 = 0.33 x 2 = 0.66 mm, if you go below that radius, Sweep does not work.
I did it with a radius of 0.75 applying the safe formula that is (thickness * 1.5) / 2, 1 x 1.5 = 1.5 / 2 = 0.75 mm, it is the most used in processes of bending tubes or round bars.

cheers