I used the Simple Sweep option in the Sweep1 command a lot in Rhino 5 and this seems to have disappeared in Rhino 6. The option makes a swept polysurface as solid as you would get when created by extrude combined with revolve. A radius on construction curves remains also a radius on the edges. My experience is that eventual fillets added in a later stage do not give any trouble. Without this option it sometime does.
I have looked at other posts referring to the Simple Sweep option but could not generate the same simple construction as I could in v5. The option does not appear at all, even when all is perfectly constructed. I copied the curved from v6 to v5 and there it worked out fine.
I have enclosed a RH5 file with a Sweep1 construction and Simple Sweep enabled. Copies the same curves to RH6 and made a Sweep1 also here. This file is attached as well. In the RH5 version the arc dimension gives exact the same at any place measured. This is not true for the RH6 version.
In RH6 the resulting sweep1 has much more isocurves too, meaning higher complexity.
Hi Erik - Thanks, I see - that does seem… unexpected, to me anyway. The radius varying by a tenth at a time seems very strange to me as well, the curvature graph looks cleaner than that. I’ll look into it.