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  1. #11
    Library Marksmanship Unit Library Guy's Avatar
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    Default Postal scale?

    Howdy,

    I wonder if placing the stone on a postal or similar electronic scale and zeroing it out, would give some sort of way of measuring the pressure of the stroke?

    Me? I just go into random flail mode and trust in the Force to get my razor sharp...

    regards &C
    LG Roy

  2. #12
    Member kevin007's Avatar
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    Default I have to totally disagree with that

    Even after my 12K and CO on balsa when my blade is what I think to be sharpest I still see a big difference after my final passes on my linen and leather. No question about it.

    Quote Originally Posted by Joe Lerch View Post
    I don't know about that. Leather stropping does no sharpening nor any real polishing. It's just not abrasive enough. The principle behing it is that shaving deforms the microserrations, making them spread out so the blade seems thicker. Much of it is elastic, and the blade slowly returns to its aligned state, even without stropping, but a certain amount of misalignment remains, and that taken care of by stropping.

    I don't know that variation in pressure really matters much. it seems that using the right pressure will realign the microserrations. Anything significantly more or less will simply overdo it (possible causing microserrations to break off from stress) or be too slow.

    There's a sharpening study done by a professor which is posted here. He found that stropping after honing made very little, if any, difference. That's consistent with theory, since a newly honed edge would not have much misalignment in the microserrations. In fact, it seems that stropping before honing would minimize wear and make it easier to get the sharpest edge.

  3. #13
    Senior Member matt321's Avatar
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    Default

    Agree, for two reasons. Verhoven was measuring sharpness by measuring the actual edge thickness with an SEM. He wasn't shaving his face, so his research can't really say that stropping isn't needed for shavers. Other factors might be at work such as edge shape and uniformity. Also, he was only stropping freshly honed edges, so that says nothing about daily stropping before each shave.
    Last edited by matt321; 04-18-2010 at 12:59 AM.

  4. #14
    Senior Member matt321's Avatar
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    Default

    In theory, if bending deflection is a factor then pressure on the coarse hone and light touch with the finishing hone could give a subtle micro bevel effect that could be beneficial.

  5. The Following User Says Thank You to matt321 For This Useful Post:

    JeffR (04-23-2010)

  6. #15
    Electric Razor Aficionado
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    Default

    Gah. I hate zombie threads, but this is a good one.

    I think it's really a question of efficiency, same as using a progression of stones when honing. You can get a razor sharp using nothing but a finishing hone, or you can use a 1k,2k,4k etc. Both methods are capable of achieving the same level of sharpness - assuming your finishing hone is the same in both methods and your patience doesn't run out. Similarly, you can get a razor sharp using decreasing pressure on the strop or hone, or use more laps with nothing but light pressure. Both seem to achieve the same result, you just have to be prepared to use more laps.

    I'm not consistent in this. When honing I use decreasing pressure, but when stropping I generally just use a light touch and lots of laps (20-50 linen, 40-70 leather). But my stropping lap speed is so much faster than my honing lap speed, so that may be why I use the theoretically less efficient stropping technique.
    Last edited by mparker762; 04-23-2010 at 01:20 AM.

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    JeffR (04-23-2010)

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