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Thread: Stone ID?

  1. #11
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    I don't have any diamond plate, but have some sandpaper progressing from 120g to 3000g. I have an 8K synthetic stone. So, are these good instructions for flattening? If not I will just sand on one of the ends to get the info yall need until so I don't waste material on the top.

    From https://www.japanesenaturalstones.com/how-to-use-guide/

    How to smooth your natural stone:

    Flatten your natural stone with a DMT (120 or 325) or Atoma (140). Sandpaper can also be used, it does not matter. Make sure to finish with highest grit possible. Smooth your natural stone with a higher grit 6-8K, or even 10K stone. A nagura or other natural stone can also be used. Your stone has to be like a mirror when it is dry and has some reflection when you look at the surface at the right angle. Small holes or big single scratches are OK, they do not affect sharpening that much, so do not bother to flatten them out
    If you're wondering I'm probably being sarcastic.

  2. #12
    Senior Member blabbermouth tintin's Avatar
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    I usually start by cleaning a dirty stone by soaking it in a degreaser like Mean Green or something similar from the dollar store. (even if it is a Thuri it's possible that someone didn't follow the instructions and used oil on it). I don't think Thuri's soak up oil like Arkies so it should clean up easy. If you're anxious just to find out what it is then some wet-dry sandpaper on a piece of marble as a backer or even a aluminum cookie sheet from the thrift store placed on a cement floor will work. i've never used another stone to flatten a stone just sandpaper (or silicon carbide) up to 1k or 1500.
    Last edited by tintin; 10-13-2020 at 11:08 PM.

  3. #13
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    Quote Originally Posted by tintin View Post
    I usually start by cleaning a dirty stone by soaking it in a degreaser like Mean Green or something similar from the dollar store. (even if it is a Thuri it's possible that someone didn't follow the instructions and used oil on it). I don't think Thuri's soak up oil like Arkies so it should clean up easy. If you're anxious just to find out what it is then some wet-dry sandpaper on a piece of marble as a backer or even a aluminum cookie sheet from the thrift store placed on a cement floor will work. i've never used another stone to flatten a stone just sandpaper (or silicon carbide) up to 1k of 1500.
    Thanks Tintin. I should have some degreaser around here. I am already over budget on this box of stuff, so I not looking to buy a diamond plate or anything. So, I think that the baking tray and sandpaper is how I will go. Just have to make sure they are flat enough. I've also seen people just wet the counter and put the sand paper directly on that. As long as my girlfriend is asleep long enough I can lap it and clean up before she knows I should be alright .

    Good to know I only need to go up to 1K to 1500.
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  4. #14
    Senior Member blabbermouth PaulFLUS's Avatar
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    I think that is part of a label. The waxy residue you mentioned: is it on the same side as the paper stuck to it? If so it's probably the adhesive.
    Name:  PXL_20200927_210726392.jpg
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    Like this for instance.
    Iron by iron is sharpened, And a man sharpens the face of his friend. PR 27:17

  5. #15
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    What ever it was, it is gone now.

    I have no point of reference, obviously, but it seemed to flatten up pretty fast. Maybe 10 laps at 400 grit and all the pencil marks were gone. There were some rough spots around the edges, so I cleaned those up a bit and there were some pretty deep scratches, and all those are gone now.

    I took one of my "to-be-honed" blades and swiped it on the clean wet stone for a bit, and I admit, I like the way it feels. I also like the tink it makes when you put it down.

    Anyway, I tried to take more pictures than yall could want, so I have more. Heck, I even included as it was drying in case there was a clue in there for you. I dumped the slurry on a white cutting board and it turned back to rock color. Maybe that is obvious to geologist, but strange to me.

    Also, before you start worrying about the pot luck, that baking sheet has not seen food in many many years.

    Thanks for all the help guys.
    Attached Images Attached Images       
    Last edited by planeden; 10-14-2020 at 04:42 AM. Reason: Proofreading is your friend
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  6. #16
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    Quote Originally Posted by PaulFLUS View Post
    I think that is part of a label. The waxy residue you mentioned: is it on the same side as the paper stuck to it? If so it's probably the adhesive.
    Name:  PXL_20200927_210726392.jpg
Views: 97
Size:  23.4 KB
    Like this for instance.
    By the way, I was looking through your box of stones post today and it looks like you have a similar stone in your's.
    If you're wondering I'm probably being sarcastic.

  7. #17
    Senior Member blabbermouth PaulFLUS's Avatar
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    You must mean the small blue/black one. Not sure what that one is. I was hoping someone would chime in. It has a sparkliness to it though which it doesn't look like yours does. I injured my hand before I had a chance to do anything with that lot so I am dying to try them out. I'm really intrigued with that little one though.
    Iron by iron is sharpened, And a man sharpens the face of his friend. PR 27:17

  8. #18
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    Quote Originally Posted by PaulFLUS View Post
    You must mean the small blue/black one. Not sure what that one is. I was hoping someone would chime in. It has a sparkliness to it though which it doesn't look like yours does. I injured my hand before I had a chance to do anything with that lot so I am dying to try them out. I'm really intrigued with that little one though.
    Yeah, mine does not have any sparkles.

    Maybe post the stone here by itself, it has been very informative. Sadly, I was just intending to get "yep, you sharpen stuff on it". Never occurred to me that someone could identify the region it came from. It is like when you meet a wine person (not a smellier, but something like that) and they can recognize where the grape is grown by the flavor of the dirt or whatever. It is just amazing what knowledge some people have.
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  9. #19
    Preserver of old grinding methods hatzicho's Avatar
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    Quote Originally Posted by planeden View Post
    What ever it was, it is gone now.

    I have no point of reference, obviously, but it seemed to flatten up pretty fast. Maybe 10 laps at 400 grit and all the pencil marks were gone. There were some rough spots around the edges, so I cleaned those up a bit and there were some pretty deep scratches, and all those are gone now.

    I took one of my "to-be-honed" blades and swiped it on the clean wet stone for a bit, and I admit, I like the way it feels. I also like the tink it makes when you put it down.

    Anyway, I tried to take more pictures than yall could want, so I have more. Heck, I even included as it was drying in case there was a clue in there for you. I dumped the slurry on a white cutting board and it turned back to rock color. Maybe that is obvious to geologist, but strange to me.

    Also, before you start worrying about the pot luck, that baking sheet has not seen food in many many years.

    Thanks for all the help guys.
    Put the slurry on a black background, that will help to define the color. You cannnot distinguish that on a white underground. Pretty sure that it is a light green thuringian.
    Regards Peter
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  10. #20
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    Quote Originally Posted by hatzicho View Post
    Put the slurry on a black background, that will help to define the color. You cannnot distinguish that on a white underground. Pretty sure that it is a light green thuringian.
    Regards Peter
    I see what I did wrong. I got a little over confident and challenged yall to find a picture I did not take. Touche' my friend, touche'.

    Thanks. I appreciate the help. I'll try to get some more pictures tonight.

    I did find this that says the color doesn't really tell me much and I just have to scrape things on it to see what it does. Like everything, I'll probably start with a pocket knife.

    From gssixgun https://sharprazorpalace.com/hones/8...tml#post954866

    "Eschers are Blue, Blue/Green, Yellow/Green etc:
    Eschers are a graded brand of Thuringens ie: all Eschers are Thuringens not all Thuringens are Eschers... there are also many other Brands of Vintage Thuringens that had their own grading systems.. Again though the differences are only known after the stones are used ...

    I hope that helped rather then confused "
    If you're wondering I'm probably being sarcastic.

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