LOL,
This is a reminder to all how the design process can sometimes go wrong. Often engineering will come up with a design that, if the draftsman/machinist doesn't interpret it into reality, the end result is hugely expensive. Imagine what it would cost to EDM this part and it's mate. You would probably have to send it out and it would be over $1k coming back.
Once I had a project I was working on and the electrical engineer made a mistake on the schematic for some capacitors. He got the voltage and the values swapped. He wanted 10,000 microfarad caps at 100Volts. The error got all the way through the design process and then went to manufacturing. One day the engineer got a call from the parts department asking "Where do you want these capacitors?". What should have been a small baggie of caps turned out to be a 18 wheeler in the parking lot trying to unload capacitors that were about 3 feet tall each.
You just gotta laugh.