Refretting is a particular interest of mine a this before/after image shows
The frets on this well played 60's Strat were worn out right down to to the fretboard! It is a heavily gigged guitar and the customer wanted another 40 years use from it!
After the frets were renewed and the fingerboard reconditioned it was a dream to play.
The secret with a vintage guitar like this though... is NOT to make it "feel like new", but to keep the vintage worn feel of a "played in" neck or it will just feel synthetic and characterless. Also the customer needs to feel at home with his lifelong friend when he gets it back!