@Laon A few posts up, there's a couple of relevant examples that cover how to use segment matching to connect a cylinder to a curved surface and how to route the topology around the base of a cylinder that connects to an angled surface. The basic principles of these fundamental modeling strategies can be combined to…
@UhhNope It depends on which critical part is going to constrain the surrounding geometry but the basic principle is the same: match the edge segments of the intersecting geometry. If that's not possible (because of some geometry restriction) then the next best thing is to either spread the error out over a wide area or…
@navneethdodla94 Start by blocking out the shapes and matching the cylinder segments near the intersections. Try to minimize the amount of superfluous geometry by using existing cylinder segments as support loops for additional operations. Avoid adding support loops and secondary details too early in the process as this…
@Welcj When it comes to game art and high poly models for baking: there's few legitimate technical reason to extend all of the edge loops across the flat areas and into adjacent shapes. Most of the time it will just create unnecessary complexity that will make it harder to edit the mesh in the future. In general: it's…
@Daf57 The base geometry that's controlling the subdivision isn't dense enough to support the perforations. For that to work the mesh would have to be subdivided to an appropriate level before the perforations are added. There are several alternatives that will look better, work better and require less effort. If the model…
Outside of specific project requirements, stock 3D certification programs and technical edge cases, there really isn't anything wrong with using triangles and n-gons in subdivision modeling. Flat surfaces are arguably the least effected by messy topology. As long as the corners are supported and the surfaces are co-planar…
@ConvexSurface Overall it looks like you have the right idea but sometimes connecting directly to a curve's existing polygon grid can cause a lot of smoothing issues. In these cases it's often better to place the intersecting geometry between the existing segments of the curved surface and use the existing curve geometry…
@tatertots You're welcome and thank you for sharing your results and followup questions. Example images in my previous post only show the initial block out, the final topology with a smoothing preview and the final subdivision model with a shiny material to highlight any artifacts. Only showing the starting and ending…