Nuttarat.Vichanphruek 0 Report post Posted December 14, 2022 Hi all, I have been creating the connection between the bow and bulbous bow by using the fillet surface method. You can see in the figure. The blank space is where I created the connection. It looks okay when I play with the parameters such as tangent factor and fillet length as shown below. However, when I want to do the optimisation by playing with parameters around it can give me the unsmooth curve connection as shown below. Do you guys have any suggestion on the way to make the geometry more robust to be optimized well. Share this post Link to post Share on other sites