In my personal experience, the process is very quick and relatively painless. The worst part, really, is boxing it up and getting it shipped out. The turnaround has been amazingly fast.
As you’ve bonded with this one, you may want to imprint it with a different name as to not sully the memory. When you’re ready to bond with your active Glowforge, the following should happen:
You: "Everything’s going to be alright."
Glowforge: "Now that you’re here."
You: "Do you trust me?"
Glowforge: “With my life.”
After a successful job, your Glowforge may come to you…
You: "Hello, Glowforge. How are you feeling?"
Glowforge: "Did I fall asleep?"
You: "For a little while."
Glowforge: "Shall I go now?"
You: “If you’d like.”
This will ensure a positive continued relationship with your Glowforge.