https://youtu.be/XQ0Q6M66ToM This tutorial shows you how to transform a multi-patches surface into a clean surface. With the surface simplification functionality, you can merge patches together and obtain a proper surface. Combined with the healing feature, you fill the small gaps and connect all the patches together. To verify if the surface you can offset it to see if it is fully healed. The final step is to open the SIMULIA Structural Model Creation application, to mesh the surface and see why is it useful to clean the surface first.