For damaged key extraction, auto locksmiths carefully remove fragments from locks and ignition cylinders

https://www.g28carkeys.co.ukrqky861.rivetgarden.com/posts/it-s-the-complete-cheat-sheet-for-auto-locksmith-cost

For broken key extraction, auto locksmiths carefully remove pieces from locks and ignition cylinders. They reduce damage and after that produce a replacement key that works correctly.