My first experiment with a jigsaw produced a nicely rounded shelf, but it's terribly rough. I am considering reducing the labor needed to properly sand it by getting another toy: a router. A nice side effect of using a router is that the top and bottom edges would not be so square and would be forgiving when someone bumps into them.
Would using a router (once for the top side, and another for the bottom) leave the edge sufficiently smooth so that a bit of hand buffing with 200-grit paper would suffice? Or would I be left with something that is even harder to work with because I would need to sand a round, rather than a semi-flat, edge?