It is only possible to get a "Knife Blade paper cutting sharp". A knife blade is to thick for razor sharp, you may be able to cut the hair off your arm or something like that, but it's not shaving razor sharp, it's not like in the movies, in the movies they can also light matches on thier beard stubble.
The stone you bought should be adequate to get paper cutting sharp, assuming your knife has a factory cutting edge on it (which sometimes is sharper than you can get by hand), you need a finer stone, or Diamond sharpener, lay the knife with the groove that tappers to the cutting edge, and move in a circular motion (you may want to add water, oil, or spit to the stone-this helps catch any small metal shavings and get them out of the way from between the stone and your blade, some say it makes the impact on the blade and stone less but I don't buy into that). After you are satisfied, (optional) take a old leather belt or shaving (Barber) strop, that has been oiled and run your blade backwards while the belt is fastened to a chair or wall. The leather will polish sharpen the cutting edge as the pressure of the strap scraps the cutting edge in th opposite direction than for cutting.)
I use straight razors frequently for shaving (when I do Shave), this requires a Leather Strop. A razor blade is not as thick as a knife edge because a razor does not need to be reinforced for cutting/chopping/slicing/etc., they have a specific purpose. When I do shave, the razor get's dull fairly fast, depending on my beard, sometimes requireing me to use the strop 75% into the shave, which is why when shaving you start on your neck and work your way to your cheaks, saving your side burns and around your ears for last. I was taught how to sharpen by my Native American Step-Dad.
. I purchased my Barber/Leather Strop and straight razors on Amazon for around $20, (my grandfather used a pearl handled straight razor, and I wanted to emmulate him and passa bit of him and the skill on through my family, (although I don't have one I have cousins whom admire the skill, yes, it takes skill) If you can sharpen a straight razor you can sharpen anything, but once a straight razor loses it's factory edge what you are left with is junk, no stone is fine enough to put a new edge on, or bring it back. You would have to spend weeks on the strop and life is too short, The strop doesn't actually sharpen as much as it maintains the edge and buffs out anything like uneven wear, or nicks that would cause it to cut unevenly, the razors edge is so soft and delicate that a thick hair can nick the blade (this is why it has to be sharpened after each shave or more often). If you were to use a knife to shave you would end up all cut and razor burned, not to mention the handle on a razor is designed to get the right cutting angle to shave, a knife would be very difficult to get the best angle for doing 1)your side burns 2) your neck, and 3)if you have a style to your beard (Goattee, fu man chu, mustache, etc.), because most people are right handed, but a razor can be used by lefties (I don't know how, it's alot harder than it sounds, imagine trying to use a knife with only your dominate hand to cut perfectly even on both sides of your head, and trimming mustache, if your not left handed you don't want to use your left for the same reason you don't write with your left, and side burns have to be planned ahead where you want the blade to slice through the hair, it won't cut straight into your hair and give you a straight line, unless you want to cut your face) The strop came with a training razor (it's just a plastic handled swivel razor blade.
36 y/o Ordained Disabled Veteran (Irish/Dutch/Jewish French Taoist ex Paratrooper) <First Generation American, well U.S. actually, "Americans", like giving me crap about my accent, so I like to be clear on my heritage, it's not my Nationality I am U.S. 100%>-My first Language was not English, but Dutch, and Second was Gaelic, I learned English in School about Second and Third Grade, and now Don't remember the other 2 much, I think because I never learned to read and write them.
I was Born in C.A. but at moms home we spoke Dutch (she was fresh off the boat), and sometimes french (I never got french), and we needed Irish (Gaelic slang) around my Dad's Mom (who was fresh off the boat) and Aunts and Uncles (who never got on the boat).
I also have a little of G.A. and S.C. in my accent, from about 3 years, with the Army in the South. I was in HHC/75th Ranger Regmt. G.A., Op For Darby Phase, Ranger School G.A., 1/508th P.I.R. Panama, 2/325th A.I.R., 82nd Airborne Division, N.C. 18th Airborne Corps Test Board, N.C., Army Jungle School Op For Panama, Army Spec Ops, N.C., and my Basic Training and Airborne school was in G.A. I am 100% U.S,
When it comes to religion and being ordained (Taoism is a religion and life style) diversity is a good thing.,
36 y/o Ordained Disabled Veteran (Irish/Dutch/Jewish French Taoist ex Paratrooper) <First Generation American, well U.S. actually>. I have Doctorates in Divinity (3), Theology (1), and Philosophy (2), none of this makes me a better knife sharpener. <I ran out of room up top> Did I mention I Learned how to sharpen knives from my Native American (Cherokee/Mexican) Step Father.
So I am a Thorough bred Mutt, With a little of all the Continents in me, and Ancient and Modern Eastern and Western Philosophy, not to mention, an education plus experience, (not with English spelling and grammer obviously) Alot about nothing, but a little of all things, Enough to get by. A regular, "Jack of all trades". Yet, not a know it all, Confucious say to seek Truth, Wisdom, and enlightenment, he was a Taoist, so was Tsun Tsu, and Buddha.