I got my Bambu X1 Carbon in Feb and have over 2,000 hours on it. Print quality remains amazing! Any issues I’ve had with the machine were minor and with a little research completely fixable. Curious as to when we are supposed to replace the nozzle? I’m of the mindset that if it ain’t broken…
I’ve tried to search the Forum, but not necessarily coming up with a recommended replacement/maintenance schedule for the nozzle itself.
Personally, it depends on the nozzle and filament material.
If you use the hard steel nozzle, it may survive the printer if you don’t print abrasive filaments, don’t face any extreme clogs or have high-speed collision.
I will only replace it when it fails, i.e. print quality drop solvable exclusively by a new hotend.