@OmegaDreams wrote:
...but blender does a better job of thickening surfaces..
I have used Blender for 18 years and have used it to clean up some of this geometry.
It can all be done in Fusion, just not nearly as quickly. Edge slide and vertex slide (vertex slide is not possible in Fusion) are much faster than in Fusion )key combo "gg". I can flatten with the loop tools with more options than in Fuiosn, I have proper snapping options to align vertices etc.
If you want to compare how Blender thickens surfaces, you'll have to compare it with how Fusion thickens in the Form environment. They produce exactly the same result because you are offsetting the control cage. In a model such as yours that will lead to uneven thickness.
When thickening in the surface tab, you are thickening the NURBS geometry created when finishing the form. There is no equivalent in Blender, because Blender works with meshes only.
Fusion can trim otherwise self-intersecting geometry when you use analytical surfaces/geometry. However, that does not work with NURBS geometry, particularly geometry created from T-splines.