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Post by Lancelot Chan on Apr 21, 2016 20:52:14 GMT
Modified my student's dynasty forge katana's spine thickness and performed a test, ended up being wonderful.
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Post by madmandom on Apr 21, 2016 22:53:46 GMT
Love how effortlessly you cut. Did you grind the spine to make it thinner and lighter?
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Post by Lancelot Chan on Apr 22, 2016 6:58:29 GMT
Love how effortlessly you cut. Did you grind the spine to make it thinner and lighter? The cold steel / dynasty forge / Fred Chen katana, those with bo hi, has design problem. They still have tremendous drag feel even sharpened to my standard, felt almost like blunt. I took several weeks to discover that if you look at the sword from the edge to the spine, you can see the end of the bo hi protruding out from the view! Let me show you picture. That bo hi termination literally hooks at the target for you during penetration! Thus what I did was make the corners hide behind the apex of the edge bevel. This turns the sword into a very high end performer once done. I had done the modification to my CS o katana and now it can do cuts that only my high end swords can do, like launching a very short cut from the weak side after a feint. That was a proof for its ability to accelerate suddenly. It can also do a single handed cut gripping the pommel only, which is a proof for its ability to carry momentum. These 2 tests are testing the two contradicting ends of a spectrum! Usually one that can maintain momentum, doesn't accelerate fast and vice versa.
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Post by Madmartigen on Apr 22, 2016 7:42:34 GMT
This is very interesting, I would have never thought of bohi dragging through target. Now that you mention that, it makes perfect sense.
Very nice cuts by the way, as usual. You are still getting better and better.
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Post by Lancelot Chan on Apr 22, 2016 7:50:33 GMT
This is very interesting, I would have never thought of bohi dragging through target. Now that you mention that, it makes perfect sense. Very nice cuts by the way, as usual. You are still getting better and better. Thanks for watching. As many of you may know already, I'm big on the "minimum effort" cuts because of sparring application. Minimum effort = less telegraphing and less conditions for launching a cut. No need to synchronize as many things as a full body big effort cut, which a sensitive opponent can tell right away. It also helps in the situation when one has to fight for real, he often carries baggage and may have been on the run for a while, or standing on slippery ground. So less effort means still being able to strike under less-than-ideal situation. The targets I used had a pair of chopsticks core, not just newspapers. So it showed how good the modification is.
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Post by madmandom on Apr 22, 2016 9:25:07 GMT
Thanks Lancelot I have an old beater that I might modify like you did. Sounds like a good idea
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Post by Lancelot Chan on Apr 22, 2016 10:05:36 GMT
Thanks Lancelot I have an old beater that I might modify like you did. Sounds like a good ideas See how much I removed.
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Post by madmandom on Apr 22, 2016 11:02:18 GMT
Thanks Lancelot I have an old beater that I might modify like you did. Sounds like a good ideas See how much I removed. Thankyou
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Post by johnbu on Apr 26, 2016 18:28:59 GMT
How did you remove the metal?
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Post by Lancelot Chan on Apr 26, 2016 19:54:01 GMT
How did you remove the metal? Using the smallest belt sander in the world. ;)
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Post by johnbu on Apr 27, 2016 3:12:25 GMT
How did you remove the metal? Using the smallest belt sander in the world. Very skillful!
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Post by Lancelot Chan on Apr 27, 2016 6:10:49 GMT
Using the smallest belt sander in the world. ;) Very skillful! Takes days to do though! The sander isn't very powerful hahaha.
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pgandy
Moderator
Senior Forumite
Posts: 10,296
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Post by pgandy on Apr 27, 2016 8:32:03 GMT
Thanks Lancelot. I had decided that the bo-hi had an adverse effect on a cut and decided that if I bought another katana it would be without a bo-hi. I think now that I may very well modify the spine per your drawing.
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Post by Lancelot Chan on Apr 27, 2016 12:57:38 GMT
Thanks Lancelot. I had decided that the bo-hi had an adverse effect on a cut and decided that if I bought another katana it would be without a bo-hi. I think now that I may very well modify the spine per your drawing. Yes, no fuller, no trouble! That's the better way to go!
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Post by svante on Apr 29, 2016 1:39:24 GMT
Love how effortlessly you cut. Did you grind the spine to make it thinner and lighter? The cold steel / dynasty forge / Fred Chen katana, those with bo hi, has design problem. They still have tremendous drag feel even sharpened to my standard, felt almost like blunt. I took several weeks to discover that if you look at the sword from the edge to the spine, you can see the end of the bo hi protruding out from the view! Let me show you picture. That bo hi termination literally hooks at the target for you during penetration! Thus what I did was make the corners hide behind the apex of the edge bevel. This turns the sword into a very high end performer once done. I had done the modification to my CS o katana and now it can do cuts that only my high end swords can do, like launching a very short cut from the weak side after a feint. That was a proof for its ability to accelerate suddenly. It can also do a single handed cut gripping the pommel only, which is a proof for its ability to carry momentum. These 2 tests are testing the two contradicting ends of a spectrum! Usually one that can maintain momentum, doesn't accelerate fast and vice versa. You have given me new insight on something i had not considered, i am grateful i have learned something, thank you.
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Post by Lancelot Chan on Apr 29, 2016 6:30:09 GMT
The cold steel / dynasty forge / Fred Chen katana, those with bo hi, has design problem. They still have tremendous drag feel even sharpened to my standard, felt almost like blunt. I took several weeks to discover that if you look at the sword from the edge to the spine, you can see the end of the bo hi protruding out from the view! Let me show you picture. That bo hi termination literally hooks at the target for you during penetration! Thus what I did was make the corners hide behind the apex of the edge bevel. This turns the sword into a very high end performer once done. I had done the modification to my CS o katana and now it can do cuts that only my high end swords can do, like launching a very short cut from the weak side after a feint. That was a proof for its ability to accelerate suddenly. It can also do a single handed cut gripping the pommel only, which is a proof for its ability to carry momentum. These 2 tests are testing the two contradicting ends of a spectrum! Usually one that can maintain momentum, doesn't accelerate fast and vice versa. You have given me new insight on something i had not considered, i am grateful i have learned something, thank you. You're welcome!
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Post by Lancelot Chan on May 1, 2016 16:33:15 GMT
Removed plenty steel from the spine for a student's Cold Steel O katana.
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Post by johnwalter on May 1, 2016 20:16:07 GMT
Good work Lancelot.Quite a few Bohi models have this problem.
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Post by Lancelot Chan on May 2, 2016 9:51:21 GMT
Good work Lancelot.Quite a few Bohi models have this problem. Yup. At least all Fred Chen (Cold steel and dynasty forge source) stuff has this problem.
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