Using Boundary Patch to create 2D surface not working

[j_s_hastings]

Hi, I am trying to use the Boundary Patch tool to create 2D surfaces to be used within ANSYS Workbench. I was having success with this method, however after trying to change the size of the interpolated lines in my sketch, I was unable to make the desired 2D surface. The error occurred when I tried to increase the length of the fins beyond 3mm. I have attached some images of successful surfaces made, as well as those that failed. I am not set on using Boundary Patch, so any other ways to make 2D surfaces would be greatly appreciated.

Thanks.

[kacper.suchomski · Accepted solution]

It seems that the constraints in the star sketch are not perfect. But it can pass.

[j_s_hastings]

Thank you!!!