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  1. #1
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    Default Diagnose: Sharp but not smooth

    Have a TI that is normally a smoothie, after a round of sharpening it has become sharp but is really not smooth. I looked at the edge at 100X and I don't see much in the way of teeth, the edge looks uniform. However, it has a sandpaper quality. The edge holds up for a shave and will strop back to HHT. The shave was close.

    Any ideas what the issue and resolution may be?

  2. #2
    Irrelevant stimpy52's Avatar
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    Default "sharpening"

    Did your "round of sharpening" include any diamond paste or spray? I have a felt block w/ .25 micron diamond spray on it -- it makes my razors harsh as crap. Stopped using it, will probably chalk it up to experience.
    Don't get hung up on hanging hairs.

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  4. #3
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    Quote Originally Posted by stimpy52 View Post
    Did your "round of sharpening" include any diamond paste or spray? I have a felt block w/ .25 micron diamond spray on it -- it makes my razors harsh as crap. Stopped using it, will probably chalk it up to experience.
    Unfortunately no. I used a thuringian (70 strokes) followed by coticule with just water (100 strokes).

  5. #4
    The original Skolor and Gentileman. gugi's Avatar
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    Default

    I have no idea, what your problem is, however the current production of TI is very good after diamond pasted strop.
    You have a previous reference with that razor, so the problem is with the honing for certain. I could suggest trying few different finishings and observe what differences they make. And then perhaps redo the honing, carefully observing how the tests you are using during the honing progression.
    I can see a lot of useful things in my microscope, that help me honing, but you may not have the resolution in yours.

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  7. #5
    The Great & Powerful Oz onimaru55's Avatar
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    Default

    Quote Originally Posted by bonusmarple View Post
    Have a TI that is normally a smoothie, after a round of sharpening it has become sharp but is really not smooth. I looked at the edge at 100X and I don't see much in the way of teeth, the edge looks uniform. However, it has a sandpaper quality. The edge holds up for a shave and will strop back to HHT. The shave was close.

    Any ideas what the issue and resolution may be?
    I'm thinking you may have just enough of a wire/burr/etc to be uncomfortable but maybe due to the TI's hard steel it is not folding away as on a softer tempered razor & the edge survives the shave.
    I'm surprised finishing on a coticule has not smoothed it out.
    A few firmish strokes on linen, then a few laps on your finisher again may help if there is a wire.
    Any pics at 100x ??
    Last edited by onimaru55; 07-25-2010 at 02:28 AM.
    “The white gleam of swords, not the black ink of books, clears doubts and uncertainties and bleak outlooks.”

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  9. #6
    Senior Member blabbermouth nessmuck's Avatar
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    Default

    Strop it 125 times on some colored newspaper,it smooths out my Wacker

  10. #7
    Senior Member blabbermouth niftyshaving's Avatar
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    Random guesses...

    Stick to one of thuringian or coticule but not both.
    My inclination is that the razor is a little overhoned
    so also reduce the number of strokes.

    Try five front/back strokes on the Thuringian
    followed by 15-20 normal hone strokes, strop and
    shave test.

    Some TI razors are very hard and a coticule may sharpen
    your TI better than the thuringian.

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  12. #8
    what Dad calls me nun2sharp's Avatar
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    Quote Originally Posted by bonusmarple View Post
    Unfortunately no. I used a thuringian (70 strokes) followed by coticule with just water (100 strokes).

    Try using the coti and then the thuri, see if that helps.
    It is easier to fool people than to convince them they have been fooled. Twain

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  14. #9
    Senior Member blabbermouth JimmyHAD's Avatar
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    Chrom ox has been known to smooth a sharp but harsh edge IME.
    Be careful how you treat people on your way up, you may meet them again on your way back down.

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  16. #10
    The Electrochemist PhatMan's Avatar
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    Default

    bonusmarple,

    I have a couple of C135 TIs that sometimes do feel a bit harsh after coming off the stones.

    I use a CrOx pasted paddle, or a cotton hanger with TI Pate a Rasoir to smooth the edge; I usually do 5 laps, test & repeat if needed.

    I find that once dialled in, the C135 edges last very well indeed.

    The C135 blades do feel different on the face compared to my other carbon steel blades; not unpleasent, just different

    Have fun !

    Best regards

    Russ

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