Page 1 of 3 123 LastLast
Results 1 to 10 of 21
Like Tree23Likes

Thread: Help with Ozuku's inclusions (with micrographs)

  1. #1
    Senior Member Skorpio58's Avatar
    Join Date
    Nov 2020
    Location
    Rome - Italy
    Posts
    293
    Thanked: 11

    Default Help with Ozuku's inclusions (with micrographs)

    Hi to all SRP's fellows.

    I'm testing (and eventually buy) this Ozuku.

    Took some photos with my (cheap) Usb Microscope of some inclusions of the stone. Anyone can say if they are dangerous?

    To the touch they do not feel and ... apparently, they don't seem to affect the passage of the blade, but I would like to be sure that cannot do any damage.

    Thanks!

    Name:  Ozuku 000.jpg
Views: 253
Size:  17.3 KB

    Name:  Ozuku 00.jpg
Views: 244
Size:  25.4 KB

    1)

    Name:  Ozuku 01.jpg
Views: 239
Size:  50.2 KB

    2)

    Name:  Ozuku 02.jpg
Views: 256
Size:  47.8 KB

    3)

    Name:  Ozuku 03.jpg
Views: 257
Size:  52.5 KB

    4)

    Name:  Ozuku 04.jpg
Views: 250
Size:  37.9 KB

    5)

    Name:  Ozuku 05.jpg
Views: 239
Size:  43.4 KB
    I know that I don't know (Socrates)

  2. #2
    At this point in time... gssixgun's Avatar
    Join Date
    Jun 2007
    Location
    North Idaho Redoubt
    Posts
    26,948
    Thanked: 13221
    Blog Entries
    1

    Default

    There is another similar thread to this one about "picking" the Inclusions out of a Japanese Natural...


    This is one but not the one I was thinking of, maybe somebody else remembers it

    https://sharprazorpalace.com/hones/6...inclusion.html
    Last edited by gssixgun; 01-31-2021 at 09:31 AM.
    "No amount of money spent on a Stone can ever replace the value of the time it takes learning to use it properly"
    Very Respectfully - Glen

    Proprietor - GemStar Custom Razors Honing/Restores/Regrinds Website

  3. #3
    Senior Member Skorpio58's Avatar
    Join Date
    Nov 2020
    Location
    Rome - Italy
    Posts
    293
    Thanked: 11

    Default

    Ooops... sorry! Can you move this post there if it's redundant?
    I know that I don't know (Socrates)

  4. #4
    Senior Member alex1921's Avatar
    Join Date
    Jan 2017
    Location
    Woodbury, Minnesota
    Posts
    579
    Thanked: 225

    Default

    First, do you hear anything when you go over those areas. If you hear nothing then my next step is looking at the bevel of the razor with the microscope to see if the inclusions affect it or not. I use a test razor for that just in case. If you see scratches on the bevel after going over the inclusions then that's not good.

    Of course you could try to lap them out but unfortunately a lot of times you get rid of them and new ones show up. Like Glen said you could pick them out. I remember Steve56 wrote about it in the past.

    Another thing to consider is that areas that can be scratchy with water only might not scratch if you are on slurry.

  5. The Following User Says Thank You to alex1921 For This Useful Post:

    Skorpio58 (02-01-2021)

  6. #5
    Senior Member Skorpio58's Avatar
    Join Date
    Nov 2020
    Location
    Rome - Italy
    Posts
    293
    Thanked: 11

    Default

    Thanks!

    I've already tested a razor (water only & with slurry) and after water I saw 2 chips on the edge... but I didn't checked well before starting and that razor had already some chips in the past. Don't rememer if I eliminated all before. So... I'll test it again this evening and check it better...
    I know that I don't know (Socrates)

  7. #6
    Senior Member Steve56's Avatar
    Join Date
    May 2014
    Location
    Knoxville, TN
    Posts
    1,837
    Thanked: 508
    Blog Entries
    1

    Default

    Those types of inclusions can be a problem but not all of them are all of the time. They can release grit from inside the ‘hole’ which can be cleaned out with a pick, but the brown areas can also be harder than the rest of the stone. In the end, you just have to try it and see, but I’d pass on a stone with inclusions that are that prominent unless the price was really low, like tomo nagura low. Hard barber size Ozuku are cheap anyway.
    My doorstop is a Nakayama

  8. #7
    Senior Member Steve56's Avatar
    Join Date
    May 2014
    Location
    Knoxville, TN
    Posts
    1,837
    Thanked: 508
    Blog Entries
    1

    Default

    Maybe this is the thread Glen’s thinking of?

    https://sharprazorpalace.com/hones/1...nat-lines.html
    My doorstop is a Nakayama

  9. #8
    Senior Member blabbermouth
    Join Date
    Apr 2012
    Location
    Diamond Bar, CA
    Posts
    6,553
    Thanked: 3215

    Default

    If it is a problem that will chip an edge, you will feel it honing on a thin slurry.

    If you do not feel it, it is not a problem. It is part of buying stones cheap on eBay, and the fun. Sometimes you find gold. But as said usually you are not paying a lot for these stones. If they are not razor quality, they make good knife or tool stones.

    If you do have to pick one out, I use a carbide scribe. General makes an inexpensive one available at Lowes or Home Depot. I fill with CA and let dry hard a day or two then lap flat. CA kicker hardened is not as hard as air dried CA.

    Usually if you are going to have a problem it is the white inclusions, quartz that is harder than the stone.
    gssixgun likes this.

  10. #9
    At this point in time... gssixgun's Avatar
    Join Date
    Jun 2007
    Location
    North Idaho Redoubt
    Posts
    26,948
    Thanked: 13221
    Blog Entries
    1

    Default

    Quote Originally Posted by Steve56 View Post
    Maybe this is the thread Glen’s thinking of?

    https://sharprazorpalace.com/hones/1...nat-lines.html


    Yeppers that is the one it had great ideas from you and others, and pics to boot
    Steve56 likes this.
    "No amount of money spent on a Stone can ever replace the value of the time it takes learning to use it properly"
    Very Respectfully - Glen

    Proprietor - GemStar Custom Razors Honing/Restores/Regrinds Website

  11. #10
    Senior Member Skorpio58's Avatar
    Join Date
    Nov 2020
    Location
    Rome - Italy
    Posts
    293
    Thanked: 11

    Default

    Thanks all for your reply.

    First of all I would like to point out that this Ozuku is not mine, but I'm testing it (and eventually buy).

    Yesterday made a couple of (more) in-depth tests with 2 razors. A Gold Dollar & a (just @ home) unknown Swedish razor.

    Tested the Gold Dollar first water only and then with a light Sho-Honyama slurry. The chip on the edge was already there before the test.

    As it seemed good enough... (Isn't it?) I ventured to work on the stone with the Swedish razor.

    After bevel setting with a King 1K I went on the Ozuku with a diamond slurry used in progressive diluition, followed by 30 laps of stropping on leather.

    Today it delivered a very confortable shave. Next time I'll shave with the Gold Dollar.

    Maybe I'll make an offer (50/60€) to the owner and see if he agree... Am I wrong?


    Gold Dollar


    Name:  Gold Dollar Start.jpg
Views: 176
Size:  49.7 KB

    Name:  Gold Dollar - Ozuku Water.jpg
Views: 176
Size:  68.9 KB

    Name:  Gold Dollar - Ozuku ShoHonyama Slurry.jpg
Views: 169
Size:  60.7 KB

    Swedish Razor

    Name:  Swedish Unknown Start.jpg
Views: 190
Size:  70.9 KB

    Name:  Swedish Unknown - After 1K.jpg
Views: 174
Size:  47.7 KB

    Name:  Swedish Unknown - After Ozuku with Diamond Slurry and Stropping.jpg
Views: 186
Size:  59.9 KB
    I know that I don't know (Socrates)

Page 1 of 3 123 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •