Adding to Charles' post.
Use a 3/8 drill to drill the end points and then route from both sides. Take small bites. That is, if you are cutting all the way through.
I cannot see the cutting board listed on the DVD cover for Season 2? What episode is it?
I don't mind if other members disagree with my comments.
I don't profess to know everything, and I may learn something new.
"Never attribute to malice that which is adequately explained by stupidity."