Closed mesh has weird artifacts (Blender Guru Anvil Tutorial) I'm making an anvil and while the wireframe of the mesh looks fine, there are weird artifacts near the base of the anvil that I can't seem to get rid of (I tried recalculate normals and merge by distance).

The problem is exacerbated in lookDev, where I'm getting an odd, swirled stretching effect.
You have ngons (faces with more than 4 vertices). Try to avoid that, especially on twisted surfaces. Just join the vertices with J to make quads.



You also have faces overlapping like these ones. Delete them but also the ones underneath because sometimes the face is large as 2 faces. Here again make sure that you have quads.