I'm trying to model a pistol slide with grooves in it which is supposed to look like this:
What I did was creating an array of cubes and subtracting it from the slide with boolean modifier. This precedure ended up with multiple n-gons:
I thought those n-gons might cause some trouble later on, so I used the knife tool to manually cut all the faces into quads.
As there were only 7 grooves in the mesh, I didn't spend too much time doing this. But I wonder if there is a easier or better way to get the same result, in case the object is much more complex than the one I'm making.