I'm creating a countertop surface for a cabinet that will sit on the floor, I have plywood, and I've maxed out my budget to buy any more lumber. I want the edge of the countertop to have a rounded edge so I was going to rout it with a roundover bit. I've heard some people say routing will cause the plywood to fray and instead I should glue a solid piece on the front and rout that instead. But I've also seen examples of plywood that seems to have been routed exactly this way and it looks fine. (Example 1, example 2.) What's the secret?