I'm trying to make a beveled "B". I have a perfectly flat B that I'm extruding, but Blender keeps adding unnecessary lines. Scaling to Z 0, limited dissolve, etc will not remove them. Deleting them breaks the face.
These lines mess up the bevel process, even if I only select the 90 degree edges of the geometry. How do I force blender to just generate a flat, uninterrupted top surface?