If you use one to sharpen a dull blade you wont' have much success. If you sharpen a sharp blade it will never get dull. Ever see men sit and whet their knives everyday? The knives were sharp before they started. Before every cutting session I run my blade through the vertical bade sharpener several times. And then several times during if I cut a lot. Unless I hit a pin or get a nick my blade lasts a long time.
I usually put the date on my blade when I put in a new one. The one I'm using now says 12/12/2017. I sharpen it before I use it every time. I expect the new Endurance blades to last me for years more. LOL
Last edited by Onebyone; 04-01-2019 at 07:27 AM.