Yay! X-carve up and running!
Cut out a heart for my wife as a first test. Success! Awwwww!
Some calibration left to do. I suspect the work surface is slightly off level. Need to fix that.
All in all the experience of building a 500mm X-carve has been a pleasure, never mind a couple minor bumps in the road mostly related to parts missing or defective.
A big thank you to the Customer Success team at Inventables for helping me out with the parts!