In order to display books, artwork, or china it’s best to have either a groove or a small lip to help keep things upright we’ll cut a 1/2″ wide by 1/4″ deep V-groove 3″ from the back edge for $25 per shelf.

To add a ¼” X ¼” lip, we can do for $40 per shelf. The lip has to be at least 1/4″set back from the front edge: We will need a simple dimensioned sketch showing the location so we can get it right.