I have a bottle cap that I wanted to create the look of a grip by selecting every few other faces (having used the Select/Checker Deselect option to do that) as seen in the pic below. Now I'm stumped on how to extrude those faces outward from the center. Even better would be a way to round the edges slightly at the same time.
Way 1: Select the faces, hit "e". Rightclick immediatly afterwards (that creates the extrusion but doesn't move it). Then hit "s" and "shift z" and move the mouse to scale them outwards.
Way 2: Hit "i". Move the mouse to scale the new faces the same size as the original one. Now press & hold "ctrl" and move the mouse.
Further adjustment (optional) Set "individual origins" and hit "s" to scale them smaller
Bevel Hit "ctrl + b" to bevel them, use mouse drag + mouse wheel to adjust number of steps (roundness) and shape.
After checker deselect use the Inset Tool I. To extrude the faces and also make them new faces a bit smaller.
Then add a subsurf modifier with two subdivisions Ctrl2.
And make the object use smooth shading.