Before
After 
3 Likes
Good achievement!
if you manipulate an object, for example using a scale, then watch out that you don’t pass along the centre of the scaling. While holding the mouse and dragging the mouse in one direction. the object becomes smaller and smaller and then bigger and bigger. You then have accidentally inverted the object, inside becomes outside (red faces as normal).
2 Likes
Thank you for the well detailed explanation 
that was very useful
1 Like
Very helpful that option to colour the normal direction. Makes spotting the problem easy.
1 Like
yeahhh that’s awesome