Filling a Gap in a Polysrf

[bigjimslade]

I have been working to eliminate triangular surfaces. In the lower bow I have a corner. As an experiment, I made a 4-sided surface in the desired shape that closes part of the lower bow. Then I trimmed that shape to form a rectangular opening.

![Sweep2 H Curvature|674x499]

So now I need to close the opening and create a smooth overall shape. The general problem is that most surface creation commands create bulges near the edges.

Here is the result with edgesrf. It creates a large buldge at the top and a smaller one at the bottom.

This is the result with a plain vanilla networksrf. It looks pretty much like the edgesrf.

Here is a networksrf with tangency at the edges.

Networksrf curvature.

Sweep2

(horizontal)

Sweep2 with tangency

Sweep2 with curvature

Patch

Of all these choices, PATCH created the best fitting surface.

So

1. It is a bad idea to use patch for something like this?

2. Why are the match tangency and match curvature limited to such a small region close to the edge so that they create edge bulges, rather than an overall smooth surface?

[Lagom]

Best would be to attach a file. Images don’t tell the story.