I never was able to sharpen a knife worth a hoot with a stone.  This may be blasphemy to most users on this forum, but I use this little sharpener to keep my knives sharp.  It has a carbide coarse side and a ceramic fine side.  I use it on my carry knife and my wife's kitchen knives.  It keeps my Buck Omni Hunter sharp enough to field dress deer, even cutting through the pelvic bone.