re: 52-36 piano box part one

I like how you mark all you piece Kiefer. You have a “production” marking system.

Question: When I pattern route plywood and have a 90 degree or so corner, I always lose a tiny piece of the core of the ply. I tried cutting close to the line less than 1/16. It helped a little.
I even tried climb cut on the corner.
I don’t notice that on you pieces. What’s the secret?:)