Hi gizmo,

> Furthermore I can't seem to 'jion' the sweeped circle? It only stays in 2 halves?ve

This is how I see it, the curve that is extracted from the model is quite complex as in, if you turn on the control points for this curve you will see there are a lot of points, so I think the auto solver for the sweep is having a hard time calculating a nice sweep, and if you zoom up into the joins, circled in red, you will see that the ends have gaps and are not square or plumb.

To get this sweeping more accurately, I again only worked on a quarter of the curve and placed the circle profile on each end of the curve 90 deg to each other, then swept it with no caps, then mirrored and joined.



I've attached your file with a completed sweep and one set up ready for sweeping on the model so you can see what I mean.

~Danny~