Joined: Apr 2007
Posts: 12,567
Likes: 2,740
From: Thunder Bay, Ontario, Canada - burrrrr!
Bikes: 1958 Rabeneick 120D, 1968 Legnano Gran Premio, 196? Torpado Professional, 2000 Marinoni Piuma
Taps will last forever, or close to it if you are careful with them. Careful includes proper storage, ensuring that they do not bang up against one another. Careful includes proper thread cutting fluid and careful includes knowing how to use the tap. Not knowing often results in a broken tap.
That said, if I buy a set for myself, they will outlast me.