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Thread: What is a bo-hi

  1. #1

    What is a bo-hi

    I have been looking to buy my first sword and have noticed that many websites offer swords either with or without bo-hi. I am curious to know what this means.

    Thanks,
    Kevin

  2. #2
    Join Date
    Jun 2007
    Location
    Dover, kent, UK
    Posts
    360
    It's the groove running down the blade of a Japanese sword.

    Google 'parts of a japanese sword' or 'katana parts'.

    Or look at this: http://www.paul-chen-swords.com/cont...urai-sword.jpg

    What type of sword you looking to get, what do you want it for?

    Paul.
    'There's a reason you separate military and the police. One fights the enemies of the state, the other serves and protects the people. When the military becomes both, then the enemies of the state tend to become the people.' - Commander William Adama.

  3. #3

    Welcome!

    Hi,Kevin. Bo-hi is one name for the groove carved into the side of the blade. It is sometimes refered to as a "blood-groove," but this is a mis-nomer. Its purpose is to lighten the blade while sacrificing as little strength as possible. Hope this was helpful to you.

    Whoops! Looks like Paul beat me to it!

  4. #4
    Join Date
    Jun 2007
    Location
    Dover, kent, UK
    Posts
    360
    Quote Originally Posted by Travis Nicko View Post
    Hi,Kevin. Bo-hi is one name for the groove carved into the side of the blade. It is sometimes refered to as a "blood-groove," but this is a mis-nomer. Its purpose is to lighten the blade while sacrificing as little strength as possible. Hope this was helpful to you.

    Whoops! Looks like Paul beat me to it!
    too slow

    Travis is correct though, 'Blood-groove' is a horribly inaccurate name for a 'Bo-Hi', or simply 'Hi'

    This is also very informative by the way: http://www.youtube.com/watch?v=QUZ75...e=channel_page

    oh, and welcome to the forums
    Last edited by Paul Cliff; 04-16-2009 at 03:09 PM.
    'There's a reason you separate military and the police. One fights the enemies of the state, the other serves and protects the people. When the military becomes both, then the enemies of the state tend to become the people.' - Commander William Adama.

  5. #5
    Join Date
    Feb 2002
    Location
    Nipmuc USA
    Posts
    11,850
    Hi Kevin,

    Welcome To Sword Forum International

    One of the benchmarks for information about Japanese swords can be found here
    http://home.earthlink.net/~steinrl/nihonto.htm

    Also take your time in deciding about what a first purchase might be. It is often not long that a first soon joins another, Sometimes, that first go is something you will enjoy for years.

    Another good stop to visit aside from the forum indexes here is the front page itself. While a lot of it is kind of dated, there is a good amount of information to browse on the main page and left hand links.

    http://swordforum.com

    You'll soon come across many other links and taking some time in browsing will make for a best first purchase. Consider cost and quality for bang for the buck. Your intentions down the road may be relevant in your choices as well.

    Cheers

    Hotspur; I've got just one old Hanwei Practical katana but I still like it several years later

  6. #6
    Join Date
    Feb 2006
    Location
    Albuquerque, NM
    Posts
    658
    Besides lightening the blade, the hi causes turbulence as air passes over it and creates an audible whistle, or kirizaze. A normal blade will make the sound too, just nowhere near as loud. This is good feedback for training, but some don't like it

  7. #7
    Thanks for the great info guys. Paul, I'm mostly looking into collecting and display. Any suggestions on swords to look at?

  8. #8
    Someone know what tool are used to make the bohi?

  9. #9
    Join Date
    Sep 2006
    Location
    Järvenpää, Finland
    Posts
    3,241
    The connoisseur's book of Japanese Swords by Kōkan Nagayama, page 73: (note that the link isn't directly to the correct page)
    http://books.google.fi/books?id=zPys...ure-bi&f=false

    The Art of Japanese Sword Polishing by Setsuo Takaiwa, Leon Kapp and Hiroko Kapp, page 178:
    http://books.google.fi/books?id=Zusm...ure-bi&f=false

    Check also the Wikipedia article:
    http://en.wikipedia.org/wiki/Fuller_(weapon)
    Certified nerd; if you need an Excel sheet or an AutoCAD drawing done, just drop me a PM!

  10. #10
    Quote Originally Posted by Timo Qvintus View Post
    The connoisseur's book of Japanese Swords by Kōkan Nagayama, page 73: (note that the link isn't directly to the correct page)
    http://books.google.fi/books?id=zPys...ure-bi&f=false

    The Art of Japanese Sword Polishing by Setsuo Takaiwa, Leon Kapp and Hiroko Kapp, page 178:
    http://books.google.fi/books?id=Zusm...ure-bi&f=false

    Check also the Wikipedia article:
    http://en.wikipedia.org/wiki/Fuller_(weapon)


    Ordered both books .)

    Thanks

  11. #11
    Some store that sell that kind of tools?

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