Hi guys! ....
I have installed the new 2021.2 and I really think that Smart Extrusion is really a piece of art but.....
Usually I like to have new features like Smart Extrusion but I think that this news is just 70% of the potential... I tried several times but is not possible to use it like sketchUp or Fusion 360.... to make holes in negative extrusion produce flipped polygons and bad geometry!....
Please, update soon of possible to make this feature really great!
https://youtu.be/xTzh4KGuXzE