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Thread: how do you turn a mirror-polish into a satin finish?

  1. #1
    Senior Member EdipisReks's Avatar
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    how do you turn a mirror-polish into a satin finish?

    i put a mirror polish on my Shigefusa (not scratchless, but it's bright and reflects beautifully), but i'm kinda sick of the tendency to pick up small scratches. i tried using a fairly coarse wet/dry, tonight, and i actually managed to make the polish brighter! any suggestions?

  2. #2
    Get a rust eraser. I think I have this same one and it has worked well for me: http://korin.com/Rust-Eraser-Sabitoru
    I bought mine from Jon, but I don't think it's listed on his site. You should ask him about it.

  3. #3
    Senior Member EdipisReks's Avatar
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    i actually own one, i've just never used it on a finish like this before. i'll give it a shot, thanks! i'm guessing moving the knife against the eraser is the way to go, just like finishing with sandpaper...

  4. #4
    Senior Member EdipisReks's Avatar
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    hmmm, well, it's a start. the rust eraser doesn't remove much metal, so this'll take a long while. well, better to take off too little material than too much, and it's easy to get even lines.

  5. #5
    I think you could move the rust eraser if that's easier for you. I laid the knife down on a soft surface with the handle hanging off (so the blade is flat on the surface) and went at it with the rust eraser and a good bit of pressure until the scratches I didn't want were gone. The eraser itself doesn't leave very deep scratches so it wasn't hard to even things out after that. I just ran the eraser in straight lines over the knife a bunch of times with decreasing pressure until I got the best finish I could. I still couldn't get perfectly straight lines because it gets a little tricky around the handle, but it's pretty good.

    Edit: I forgot to add that if you have fingerstones or just some kind of slurry off of any stone (except something super coarse), that may help speed up the process.

  6. #6
    Wait, don't you have fingerstones? Herrroooo

  7. #7
    Senior Member EdipisReks's Avatar
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    i put the eraser on one of my DMT no slip pads, positioned the ferrule against the edge of the eraser and then pulled the knife. it's the same way i use sandpaper.

  8. #8
    Senior Member Seb's Avatar
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    Chocera #400 or Suehiro Rika for finer.

    Be interesting to see what a muddied-up King #800 would do.

  9. #9
    Quote Originally Posted by Seb View Post
    Chocera #400 or Suehiro Rika for finer.

    Be interesting to see what a muddied-up King #800 would do.
    you....you're kidding, right?

  10. #10
    I've polished a couple of Shigefusas to a really nice satin finish using 220 wet/dry sandpaper. Put the knife in a knife vise if you have one, put the sandpaper on a sanding block backed by hard rubber (buy one if you don't have one). Lubricate with water with a couple of drops of Dawn added. Polish in one direction only (heel to tip is recommended). Very important: change sanding sheets every time you turn the knife over to work on the other side of the blade. Strive to move the sanding block in a straight line.

    I've tried going to 300 and 400 grit, but this starts to give a polished finish, so I always drop back to 220.

    Here's a picture of one I just finished:



    P.S. I polished the hagane on a Woodcraft buffer, but that's a whole 'nother story.

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