I carried one for a week on a recent passaround and did some major cutting. I started the day with a hair popping sharp edge and cut 74 ft. of corogated cardboard. After the cardboard it would still barely shave with quite a bit of pressure and technique. After 10 total swipes on the Sharpmaker fine rods (5 swipes on each side), it was right back to hair poppin sharp! Spyderco incorporates an excellent heat treat into their s30v! The knife was awesome too, it worked great for an everyday utility knife. Very heavy duty with its thick stainless backspacer and liners. If it was mine, I may be tempted to drill out the liners.