Maybe someone can explain this general problem that I have with Sweep2 when using table of offset data. That is, accordion pleats. I have read many posts and seen several Youtube video decrying the use of NetworkSrf.

Here I have table of offset data:

The curve at the top and bottom of the point set have been faired to get rid of rounding errors and then I regenerated the Y coordinates by intersecting. Then I have drawn the vertical curves through the new points in the original points. I have spaced the vertical curves every four frames, except the end where I did 3 frames.

Here I have done networkSrf:

The highlighted curves are intersections I did at the waterlines matching the points. Note that these curves run close to the original points that I did not include in the curve set.

Here have used the same curves with Sweep2.

Now the intersections waterlines are wavy.

This is not always the case. Here have three surfaces joined. The forward surface is a tangency zone, so I used edgesrf. The surface above the knuckle is a sweep2. It’s sections are mostly lines.

I’m, still trying to figure out what I am going to do for the dreaded corner (which in this case is actually 4-sided). Sweep2 gives the accordion pleats there.

- What causes sweep2 to create accordion pleats?
- Does this illustrate use the right too for the right job?