I need help. I model a car bonnet and overall everything is good, but there is a small weird shading that I don't know how to fix. Auto-Smooth is on, a bonnet line is marked as sharp, and I tried Recalculate Normals, but nothing worked. Maybe I don't understand something. Thanks in advance. Here is a link to a file: and here are a few images:
Just adding something else to Moonboots suggestion:
After dissolving the 2 edges to even out the spacing there is still a little bad shading going on (see first image below) which if necessary, can be fixed by using the Clear Custom Split Normals Data option.
Object Data Properties > Geometry Data > Clear Custom Split Normals Data.
How did you arrive at having Custom Split Normals Data? When you selected the edges to Mark Sharp I think you must have done the following: with edges selected > Mesh > Normals > Split. This results in the Auto Smooth Angle being greyed out.
Instead of using the above method to split the normals of the selected edges use the more usual : selectect the edges > Edge > Mark Sharp.
I don't really understand the difference between the two methods but just thought it worth mentioning.