The duration of the cut will be the consequence of a use appropriate to the nature of the knife. It will be possible to maintain the effectiveness of the cutting edge for a long time by correctly using a flintlock or a fine-grained stone, after a certain period of use it will still be necessary to entrust the knife to expert hands.
The folding knife has a mechanism that if regularly lubricated will prevent premature wear: insert a drop of oil with the knife closed, between the blade and the spring and open and close several times and finally dry the excess oil.