Long cut times - any precautions before hitting go and walking away?

As noted in the Machine Operating Checklist:

https://my.carbide3d.com/faq/machine-operating-checklist/

Never leave the machine running unattended/unsupervised.

If a cut is taking a long while, look into why — adjust the tool used, the toolpaths, feeds, speeds, &c. The feeds and speeds in Carbide Create are quite conservative, see:

See

for concepts on this and see the series #MaterialMonday:

for specifics and also see: