re: Let's do this the hard way -- Designing for the CNC

Love it! You might be going overkill for this part, but you will learn a lot for future work which is always good.
Seeing that once you have it all dialed in, you can make a spare or fit up the other stool so everything matches perfectly.

Having it buzz word compliant is a bonus!

Just need to add "proactive" in there somewhere 🤠