Hi, i often download models made with software other than blender and the topology of these models is often made up of messy ngons. I’m not gonna post all of them here but just as a study case, how do i best approach the retopo of this shower head?
the goal is to have a clean non-overlapping light map UVs for baking. I don’t mind ngons as long as the UV maps is clean. Blend file is here: http://pasteall.org/blend/index.php?id=43797
I used the 2D to 3D approach here, making sure to have enough edges to make the shapes I wanted to be holes and then modeled it low poly by hand and sub-divided it. Not a completely Blender project, but you sure can do the same thing with Blender, or any other polygonal modeler.
A bit late to the game… I’d use the imported original mesh as a template. Then model your new mesh over it by using snapping which should make it easier to get your edge flows. In the case of your example there, it’s probably only necessary to model a 72° wedge for the face insert as it has 5-fold rotation pattern. (360°/5 = 72°) Then it’s just a matter of arraying in reference to an empty object which is rotated (again 72°) to fill in the rest.