How to insert a seam into a soid without seam

I have such solids without any seams, for example, a cylinder only have two ring edges. I think such topology is not allowed in OpenCascade. I will very appreciate it if anyone could tell me how to insert a seam into such soids.

Thanks.

Sun

gpsunjp's picture

I have resolved this problem using ShapeFix_Face::FixMissingSeam().

G.P. Sun

PG's picture

Do u mean that the common edge of the two faces are not visible after fuse. Can u duplicate in test harness environment ?
regards
-PG