Lapping through a cracked Naniwa

Discussion in 'Sharpening Station' started by galvaude, Mar 5, 2019.

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  1. Mar 5, 2019 #1

    galvaude

    galvaude

    galvaude

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    So I have a Naniwa Traditional 8000 (supposedly the new Snow White...that is another story). It has been severly cracked since it was forgotten in a perma soak tub for 2 days. I left it in storage for a few years but now I'm wondering if it is worth to lap through the cracks.

    When I look from the side, the cracks seem to be about 1/8'' deep from each face and there is a lot of cracks. Looks like a dried out river bed.

    Anyone ever tired it ? Is there a chance that I end up with cracks even after lapping 1/8'' from each face ? Is the stone doomed ?

    It is my only 8k and I don't plan on buying any but would be nice to have it back for times when I want a 1k / 8k progression.

    Thanks.
     
  2. Mar 5, 2019 #2

    Knife2meatu

    Knife2meatu

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    Huh, and here I thought the traditional line could be soaked.
     
  3. Mar 5, 2019 #3

    krx927

    krx927

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    You will never know until you try...
     
  4. Mar 5, 2019 #4

    esoo

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    Aside from the time to lap it down, what do you have to lose from trying?
     
  5. Mar 5, 2019 #5

    HRC_64

    HRC_64

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    Alot of comments re: cracked naniwas seem to imply the don't affect performance as long as the stone is on a base.
     
  6. Mar 5, 2019 #6

    galvaude

    galvaude

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    The traditional line from the information I gathered is quite different from grit to grit.

    The 8000 is a magnesia binder like the Pro line. The stones feels very much like them too.

    They even have to different 220 --> one pink is aluminum oxide and one green SiC
    same goes for the 1000 --> one clay binder (brown like a king) and one vitrified (beige).
     
  7. Mar 5, 2019 #7

    galvaude

    galvaude

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    I can definitly feel some cracks, not all of them but still not ideal. Obviously it is worse on edge leading than trailing strokes.
     
  8. Mar 5, 2019 #8

    Knife2meatu

    Knife2meatu

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    Yes, now I'm noticing it. I don't think I've ever seen a single vendor stock the entire line-up; and I'm sure I've never seen the differences between the different stones being discussed. I wonder if the beige traditional 1k is the same as the beige Gouken Musou 1k.
     
  9. Mar 8, 2019 #9

    Foltest

    Foltest

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    Depends on width and direction of the cracks. If the cracks aren't parralel to edge when you sharpen blade should just skip over them with no problem. I wouldn't lap it, way too much work
     
  10. Mar 10, 2019 #10

    Illyria

    Illyria

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    I had my old chosera 1,000 stone crack while flying internationally.

    I used it without issue for a year before airport security took it going through Guadalajara.
     
  11. Mar 10, 2019 #11

    Michi

    Michi

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    They took a sharpening stone away from you? Weird.
     
  12. Mar 10, 2019 #12
    Just out of curiosity, why did they steal you personal property?
     
  13. Mar 10, 2019 #13

    Knife2meatu

    Knife2meatu

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    @Illyria --
    Did you use it without issue for a year after it had cracked on one international flight but before it was taken by security a year later during a trip through mexico?
    Or did you use it without issue for a year before it both cracked while flying and then got taken away by security on the same trip?
    Or did airport security cause it to crack when they took it, in Guadalajara; at which time you had used it for a year, without issue?
     
  14. Mar 10, 2019 #14

    Illyria

    Illyria

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    I had taken it in my carry on bag for 30 or so flights, but Guadalajara was apparently sticker than the other airports. Guy said he was going to use it at his house...

    It cracked on an international flight, then I used it for over a year without issue. Until an airport security guard took it while traveling through the Guadalajara Airport
     
  15. Mar 10, 2019 #15

    Michi

    Michi

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    Convenient working at an airport, isn't it? You see something you like, you take it :(
     

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