I used the spin tool in blender 3d. I did everything right but the problem is after the spin some of the faces (or normals?) are facing the opposite direction of each other. Why does this happen? I want them to face the correct way... which is outward not inward, because then the faces are hidden, and that's not good. How…
I haven't used the spin tool thing before, but if you want the normals to be facing a certain dierction : in edit mode look on the toolbar for "recalculate normals" or "flip direction" the shortcut is (ctrl + N)