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    Username Post: Polishing knives to a mirror finish        (Topic#880917)
    ychern
    Member
    *
    06-24-10 16:56.07 - Post#2156742    



    Is there anyway to polish carbon steel knives to a mirror finish? So far i've tried various grits of fine sand paper and used a dremmel with red rouge. I've gotten close with the dremmel, but it isn't consistent. Any advice is appreciated, thanks!
     


    RRLOVER
    Master Member KnifeNut!
    *
    06-24-10 23:01.22 - Post#2156837    


        In response to ychern

    You will need a 6" or 8" buffer if you want it consistent.Thats assuming you sanded up to 2k+.
     
    Seb
    Master Member KnifeNut!
    *
    06-24-10 23:37.17 - Post#2156848    


        In response to ychern

    FWIW, this is generally not a great idea as mirror polish tends to make your blade a lot more sticky (I'm finding this out the hard way).
     
    watercrawl
    Master Member KnifeNut!
    *
    06-25-10 01:33.14 - Post#2156900    


        In response to Seb

    The answer to this question really depends on what you consider "Mirror polished".

    Mirror polished can be done to different levels. I've seen mirror polished mean anything from "I can see my reflection pretty good in the side of the blade, but there are a lot of light scratches that I can see"....to...."I could do neurosurgery in the reflection in this bad boy".

    You can get a so, so mirror with just really high grit sandpaper....say upto 5,000 grit. That provides a pretty darn nice mirror. But, 8,000 grit sandpaper and some pink compound on a buffer will make it even more so.

    The problem with using a Dremel, as RRLOVER eludes to, is that the drum is tiny and you'll never be able to even it out with that tiny thing. You need a large buffing wheel. However, such a wheel will heat up the blade quick fast and you can damage the blade with a buffer if you're not careful.
    Adam

    www.marrknives.com

    Marr Knives on FB



     
    butcher_block
    Master Member KnifeNut!
    *
    06-25-10 01:42.48 - Post#2156908    


        In response to watercrawl

    and things to remember are
    the blade after the first use will color or that the first wash can mar a blade if your not carefull

    also that buffing wheel can ripe a blade out of your hands so fast that you cant react
    the shop buffer migth be one of the most dangerous tools in a shop
     
    Bear_Blade
    Master Member KnifeNut!
    *
    06-25-10 02:24.44 - Post#2156933    


        In response to butcher_block

    I agree with Butch. The type of wheel makes a difference as well. The tight sewn, treated muslin is agressive, then the untreated wheel, a little less agressive, and the loose sewn for final pass. Please be carefull, if those wheels grab yuor knife, it WILL fly. I have heard of guys having to take a blade out of their thigh or foot.
    Feel free to check out my website.

    www.rodrigueknives.com



     
    ychern
    Member
    *
    06-26-10 17:10.35 - Post#2158081    


        In response to Bear_Blade

    Thanks for the advice! I appreciate it. I did try sandpaper up to 1500 grit, guess I'll go higher. So how do they get a mirror finish on a knife like a honyaki? Buffer? It really isn't that important to me to get them to a mirror finish, just something I wanted to try out.
     
    C9
    Master Member KnifeNut!
    *
    06-26-10 17:22.06 - Post#2158082    


        In response to ychern

    • ychern Said:
    Thanks for the advice! I appreciate it. I did try sandpaper up to 1500 grit, guess I'll go higher. So how do they get a mirror finish on a knife like a honyaki? Buffer? It really isn't that important to me to get them to a mirror finish, just something I wanted to try out.



    Stones, and stone grit compounds. Thats how they get the definition in the hamon.
     
    mainaman
    Master Member KnifeNut!
    *
    06-26-10 19:28.01 - Post#2158110    


        In response to C9

    Perfect mirror very tough to get probably impossible
    I have tried to do that on a razor and there is always something left behind.
    I can imagine on a knife because of the size it will be even harder. I have had a decent success with sandpaper, and I think if you can use some finger stones for final polish you can get a good result
     


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