Non-existent edges appearing upon shading smooth(auto-smooth)

Question

When the shading is flat these edges do not appear but when shaded smooth with auto-smooth they appear when I go over 22 degrees, how doo I fix this?

https://imgur.com/a/AXRAzF6

Answer 1 · 2024-01-23T15:37:52Z

Adrian Bellworthy replied January 23, 2024 3:37pm

Solution

It's probably because the vertices on the flat surface are not... well... flat

In edit mode and side view, box select the vertices that make up the flat surface and press S 0

Another issue could be the angle of the indent for the buttons and screen
Pushing the extruded vertices down a little more will increase the angle.

2 loves

Answer 2 · 2024-01-23T15:43:22Z

Martin Bergwerf replied January 23, 2024 3:43pm

Keep the Auto Smooth Angle below 22°.

You could also try to lower the inset Edges around the buttons a bit on the Z-Axis..I mean these:

1 love

Answer 3 · 2024-01-23T17:41:32Z

Omar Domenech replied January 23, 2024 5:41pm

And just because well why not since it always happens, see if you have double vertices, select all and M to merge by distance.

1 love

Answer 4 · 2024-01-24T13:47:20Z

N

replied January 24, 2024 1:47pm

Turns out that the angle of the screen indent was too little and I just had to lower the extruded vertices a bit.

🤘🏼

1 love