Hi Paul, just one other note - if you want to chamfer all the edges on the top there, there is a shortcut for doing that by selecting the top face instead of the top edges.

When you select a face and then do chamfer or fillet, all the edges that belong to that face will be targeted for the operation.

So in cases like this, that is just one thing you have to pick instead of picking all the edges.

But you'll still want to change that anti-aliasing setting, or update your video driver like I described above so that regular selection works properly. Please let me know if you need more info on that.

- Michael