Your images are broken, so I might be missing what you're trying to say. If I am breaking off an extra-detailed piece, like some sort of grille that is going to go on a simple box, I model it as a physically separate piece, not an integrated piece (think like a heating vent in your house, how it is a separate piece of…
To simplify the modeling process, I'd suggest starting with a sub divided cube since edge or vertex sliding over a curved surface will maintain this object's spherical shape, especially during the blocking out phase. This example was generated, using the Bevel Modifier alongside edge weights for surface hard edge /…
Is there any point to capping cylinders the way Colddeez does as opposed to just merging everything to a single vertex in the middle? If a surface is flat, you can use whatever kind of geometry you want there, triangles included, and it won't make a difference visually — but I was wondering if there's perhaps a technical…