Reply To: Topology question
Hi @CupOfTea ,
You have run into a problem that is typical in Subsurf Modeling; basically, you have a circle with evenly distributed Vertices at the top, but below you have extra Vertices (Edges) that create something like this, when Subdivided:
You can try to use the Data Transfer trick to fix, or at least improve the Shading in that area. You should maybe also consider, how this is going to be Textured. If you stick to something rusty like in the Course, you can probably get away with minor Shading issues like this.