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Thread: Damascus Knives & Re-Etchng

  1. #71
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    Old fashioned distilled vinegar will work to...just do it over and gain and rub off the reactive crud. A gallon of vinegar is cheap


  2. #72
    Dave Martell's Avatar
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    I'd like to add some notes that are specifically for the a Hattori KD re-etch job....


    1. The bolsters on these particular knives are nickel silver (AKA silver looking brass) and being such will easily turn nasty if the etchant touches them AND will bleed red streaks down onto the blade. Be sure to mask off these bolsters beforehand and do your best to stay away from them with the etchant.

    And BTW, masking off bolsters isn't a bad idea for any knife being etched.

    If you do happen to etch a bolster you're going to have to sand it back to the desired finish.



    2. The maker's mark (red stamp) will disappear. To what degree this happens depends on how long the blade is etched, how well the mark was applied, and dumb luck. I can say for sure that the more time spent in the acid will greatly increase the likelihood that this mark will dissolve away.

    I think it'd be great to coat this area with a resist like clear nail polish pre-etch but how exactly to do that without making it look like crap is something I can't help with, this is just an idea is all.


  3. #73
    Senior Member aboynamedsuita's Avatar
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    I'm almost afraid to ask how you know these details…
    "A dull knife means you're a ******* loser" – Matty Matheson

  4. #74
    Dave Martell's Avatar
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    Quote Originally Posted by tjangula View Post
    I'm almost afraid to ask how you know these details…

    Exactly!

  5. #75
    Senior Member aboynamedsuita's Avatar
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    Quote Originally Posted by Dave Martell View Post
    Exactly!
    Dang! That's what I thought
    "A dull knife means you're a ******* loser" – Matty Matheson

  6. #76
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    Quote Originally Posted by tjangula View Post
    I'm almost afraid to ask how you know these details…
    I was thinking the same thing! When I'm learning, I'm not making any money.

  7. #77
    Senior Member aboynamedsuita's Avatar
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    I wiped off the red mark of my Hattori FH with acetone, could only imagine what ferric chloride would be capable of.
    "A dull knife means you're a ******* loser" – Matty Matheson

  8. #78
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    This worked great to re-etch my yoshihiro vg-10 damascus before I gift it to my dad. Thanks for the tutorial!

  9. #79

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    Hello,
    Firstly I'd just like to thank you for posting a re-posting this guide. I've had a bottle of ferric chloride and varying grit sandpaper etc... sat on my shelf for about a year +. My knife was quite new back then so I wanted to get a bit more use out of it before I went ahead with the etch. Anyway I think I'm about ready to get it started. I just have a quick question regarding a suitable container to hold the acid.
    I purchased a Rubbermaid tub which is on it's way in the post but I don't think it's going to be ideal https://www.amazon.co.uk/gp/product/...?ie=UTF8&psc=1 I was basically going to cut a U shape in the end of the tub for the handle to sit in, being very careful with the vinegar/acid level I put in. And then submerge the knife as much as I could and wipe on acid on the parts close to the handle I couldn't submerge.
    Thinking about it I would be better with a tall narrow container I could dip my knife in vertically but I'm having trouble finding a tub. Does anybody have any ideas where I could find one? My knife is 9 inches long. Or any other suggestions would be appreciated. If it involves submerging the entire knife though I will need a solution to protect the wooden handle, which I really don't want to damage.

  10. #80
    Senior Member zitangy's Avatar
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    putting it sideways ... in a tub is not a good option with the handles on if you want to soak it in. but a good method to give it a good bath and light scrub

    just a thought... if with handle on...best to look for a tall glass container...

    a) a Lab glass container.. a tall one will work. will need a wide one enuf as the width of blade. My limited experience... seen a narrow one and cld fit in a sujihiki blade.

    b) Closest that i can think of is to look for a tall large sake bottle and cut off the neck area of the bottle .. i humble refer you to youtube as there are quite a few channels as to how they wld cut it.

    c) a certain of plastic tall plastic bottle that can hold vinegar. They come in plastic bottles anyway.

    then suspend the knife on a string and submerge it in. adjust the string length to control depth it goes into the bottle..

    can comment on concentrated/ strong acid... dont play with it as i can dispose of it safely as i do not want to corrode my plumbing pipes...


    DO wear goggles.. eyes are sensitive...

    rgds and rh fun...Z


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