Thanks! Good rendering. Very helpful. Do you use REBUILD and SHRINKSRFS a lot when connecting patches? In particular, when extracting a spline for creating a pipe for later trimming surfaces for a blend operation (manual fillet), do you rebuild the spline first, or use it exactly as extracted?

Michael, perhaps you can weigh in on this one. Would a blend using the above manual fillet (http://moi3d.com/forum/index.php?webtag=MOI&msg=4607.5) technique benefit from a rebuld for the originating path spline-- or does it even matter?