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Thread: Sharpening Issues...(if you are sensitive to bad sharpening, please avoid this)

  1. #11
    Senior Member
    Join Date
    Jul 2011
    Quote Originally Posted by goodchef1 View Post
    I was trying to figure it out also, I will go out on a limb and say that he does not understand why the blade gets cloudy during sharpening, and if it is because of his sharpening angle. Or, what causes this cloudy finish on his blade when sharpening.

    If it is not either of these, I'm still in the dark.
    I had 2 questions: If that cloudy should be there or if I am doing it wrong. My guess was that I am doing it wrong. Personally, the cloudy thing doesn't bother me but if I am to invest in more expensive knives, obviously if I decide to sell them down the line, i'd like them to be in pristine condition.

    Quote Originally Posted by ******* View Post
    What is the blade made from?
    I believe this is a solingen steel with moly/v/gr additives
    You clearly have a bevel. It is a compound bevel but a bevel nonetheless. I would take a magic marker and draw lines from edge to spine along the entire length of your knife. Make one normal pass on the stone. I wouldn't bother with the sub-500 grit stones, either. Use a finishing stone. See what you're hitting. I think you're just wildly inconsistent. I don't understand how you get a bevel at all, lol. Anyway, keep on doing the marker thing until you're only hitting the edge. It will take a very, very long time to refinish the side of the blade on stones. I would recommend you use a block of wood with some spongy material on it and sandpaper on top of that. Rub it in one direction until the finish is even-looking. Go up in grit until you're satisfied with the size of the scratches. Do you flatten your stones, btw?
    This was a factory edge badly sharpened before, so I had to reset the edge, so I used the low grit stone. Yes, I flatted the stones too. I will likely not going to waste my time with polishing it as it has no effect on how the knife works.

    My main concern is cloudiness comes from bad technique or normal


  2. #12
    Senior Member
    Join Date
    Feb 2011
    San Diego, CA
    Quote Originally Posted by ptolemy View Post
    ...My main concern is cloudiness comes from bad technique or normal...
    If you are only sharpening the edge, you might get a tiny cloudy area right at the shoulder of the bevel. This area is so thin that no one except the most anal-retentive people even notice it. All of my knives look close to new unless I've modified them somehow.

  3. #13
    Senior Member Keith Neal's Avatar
    Join Date
    Aug 2011

    angle measurement

    As a beginner learning to do this, I may be able to help. It looks like the angle of the blade on the stone is varying, giving the rounded look to the sharpened edge. Maintaining a constant angle is critical, so I wanted a way to achive that. I got out my compass and drew the angle I wanted on a piece of paper, then cut an old credit card to that angle. I don't use it to guide the sharpening, but to check the angle and make sure it is not changing. At first, I had to check it every stroke, going very slowly. Now I can use the stone for a while without checking every stroke, but I still check periodically, particularly if I have gotten distracted. Hope this helps.

    (As with most things in life, accuracy is the key, not speed. Speed will come of its own accord with practice. If you try to go fast, you will never get good.)

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    Incidentally, Dave Martell's DVD on knife sharpening is the best investment a beginner can make.

    If you reach the age of 60 without becoming a curmudgeon, you haven't been paying attention.

  4. #14

    Join Date
    Jul 2011
    St. Petersburg, FL
    Just put it on the 3200 rpm 1 hp buffer with a sisal wheel......that will clean up those scratches fast!!!!

  5. #15

    Join Date
    Apr 2011
    Quote Originally Posted by ptolemy View Post
    I had 2 questions: If that cloudy should be there or if I am doing it wrong.

    My main concern is cloudiness comes from bad technique or normal
    Yes, you are doing wrong.
    That cloudiness is coming from laying knife flat on the stone/laying knife almost flat on the stone/pressing too high onto side of the blade which basically makes youre moves even more wobbly.
    It is effect of fine stone contacting metal on the move.

    Are your fingertips bloody after sharpening? Were before? If never, that means you are pressing onto too high of a spot at your blades side, not as close to edge as possible.
    How is your pressure?

  6. #16
    Canada's Sharpest Lefty
    Join Date
    Mar 2011
    To make it simple:
    If you're sharpening the edge of your knife (which you are), there is no reason for the face of the blade to contact the stone. So, in answer to your question, the muddy look and the other stray scratches are huge indicators you're doing something wrong. As TK said, the only "muddy" part should be about 0.0001" directly on top of the bevel. We are, after all, human.
    Work on hitting ONLY your intended bevel angle.
    One of my old teachers at Fire School told us, "It's the opposite of sex. In this, you get good, then you get fast".

  7. #17

    Join Date
    Mar 2011
    Rockport, TX
    If you want to clean up the face of the blade, I'd suggest using 3M wet/dry sandpaper, in varying grits, with a little mineral oil. You can clean it right up(the logo will be gone, though).

    The face of the blade doesn't ever need to be on the stone. Just the edge bevels.

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