Funky Offset surface - can it be corrected?

Rhino Rhino for Windows
1

Hi,

Working in version 7.
V6 has the same problem.

When offsetting a free form surface inwards the resulting offset is deformed or kinked.
MakePeriodic did not help.

See images please.

Have tried to rebuild the surface before offsetting - did not help.

Any ideas about how to correct?

offset surface
offset surface915×619 75.6 KB
Original surface
Original surface915×619 112 KB

Thank you,

2

offset surface
offset surface915×619 75.6 KB
Original surface
Original surface915×619 112 KB

3

Hello - if you offset to a distance greater than the radius of curvature, that is the right answer, no correction needed on the part of the offset, only the input! Note VariableOffsetSrf might possibly be helpful here.

-Pascal