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Post by LastGodslayer on Oct 22, 2014 17:19:01 GMT
Pretty sure its not a Kult of Athena blade...
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Post by randomnobody on Oct 22, 2014 18:09:05 GMT
That filter is a nuisance. It needs to go away.
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Post by Robert in California on Oct 22, 2014 18:44:51 GMT
The filter is a "smart filter". Reminds me of my wife's new car...not really a car, but rather a computer with wheels. Electric and computerized everything. It and I have mutual dislike. RinC
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Post by Onimusha on Oct 23, 2014 18:59:57 GMT
The way I understood it, that was the point.
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Post by Robert in California on Oct 23, 2014 20:28:00 GMT
But is there any point to a "rod in a pipe" blade over a Kobuse blade?
Assuming both done as well?
One would have thought so...since Kobuse was not unknown to Japanese smiths back then.
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Post by Jussi Ekholm on Oct 24, 2014 18:07:13 GMT
Rod in pipe vs. kobuse, the first one is much cost & labor effective, and easier to produce with constant results. This is regarding traditional Japanese swords.
I think people tend to think the hardness thing backwards, these were not super hard blades but actually they had reasonable hardness, so they were versatile blades, optimal for battle conditions. You can read in the article how they could have produced high hardness of Shinto/Shinshinto but they instead choose to go with similar Hardness to Koto blades.
Koa-Isshin HRC 57 Suishinshi Masahide HRC 68
Masahide's blade that was tested had much higher hardness than the tested Koa-Isshin.
I think the hardness testings were done regardless of the damage done to the blade. There have been Muramasa blades that were used for destructive testing, so I don't think they would hesitate on HRC testing as the blade tested was probably just an average Muramasa.
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Post by LastGodslayer on Oct 24, 2014 21:12:52 GMT
I still feel these can't be Rockwell C measurements. 68 is the top limit for plain carbon steels. This also means an untempered blade.
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Post by Jussi Ekholm on Oct 25, 2014 8:29:23 GMT
I think they could have used ultrasonic hardness testers which are non-destructible. It's hard to say anything about the test performed with seeing such little data about it. However as it was researched by a doctor of Tokyo Imperial University, I believe there are Japanese scientific documents of it. And the credibility of the test is higher than when just us "regular folks" are performing tests.
I'm not sure about the measuring scale used but it can be seen that other tested blades (excluding the Muramasa) were harder than K o a Isshin.
They did not want to produce high hardness because it would not be as good as more versatile blade. They had scientific methods to produce very high hardness if they desired so, but they chose to go with lower edge hardness.
I believe that K o a Isshin sword are good user swords, however I think they are bit overpriced. Of course there are collectors who desire them, and I don't. They fetch very high prices at Japanese dealer sites, I think you might find a good deal on one in USA.
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Post by Anankai on Oct 25, 2014 20:34:34 GMT
I've been trying to find one... without much luck. These Mantetsu Gunto are quite rare on the market it seems. If anyone knows some place I can buy one, it would be cool to share the link. But I've seen some that have been sold for a very high price, wich I think is quite excessive. 5K to 10K is out of question for me...
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Post by Robert in California on Oct 26, 2014 1:16:39 GMT
Pricing for Jacky of Huawei to make a KoaIsshin katana? I have not asked and Jacky may not yet know. The high end Huawei swords are about $400. And that is with a hazuya/fingerstone polish which is probably about $80 of the price. The regular "budget" Huawei polish is a big step above the polish of budget blades and so would be what I would be fine with. Christmas is coming and if wife says ok (not that I NEED another sword), I plan to give Jacky the go-ahead, since he is he is willing to try to make one. I would guess a KoaIsshin would be near unbreakable.... RinC
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Post by LG Martial Arts on Oct 26, 2014 1:24:27 GMT
Not that I don't trust Huawei (don't have any of their swords, btw), but I'd ask for picture updates of the K o a Isshin sword if you commision one from them. I'd like to see how/what they do, and also a review of one at some point. I think this would definitely be a step up from some production models that have been around for a while now.
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Post by Anankai on Oct 26, 2014 2:28:43 GMT
Yep! Pics of work in progress is a must in this case. It's the only way to be sure the blade as been forged using the mantetsu technique. Not that I don't trust the folks at Huawei. It seems to be a pretty honest company so far. RinC, I hope your wife says ok, so we could see this mantetsu blade project being realized.
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Post by Robert in California on Oct 26, 2014 2:35:05 GMT
I have two Huawei swords, a 1085/T10 folded wakizashi and the same in a katana. Done nicely. I plan, as time permits, reviews. As for a Huawei KoaIsshin blade, I would ask for the blade, katana length, in standard furniture, buffalo horn saya furniture, and iron sword furniture, black ito, black saya, full samegawa wrap, brass menuki.
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Post by aussie-rabbit on Oct 26, 2014 3:29:23 GMT
Most important would be the blade steel, since the idea is flexibility and hardness 5160 with a T10 outer would be ideal.
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Post by Onimusha on Oct 26, 2014 4:27:02 GMT
It would be interesting to test a TH blade made of those materials. It wouldn't make much difference in a DH blade.
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Post by Robert in California on Oct 26, 2014 15:59:58 GMT
My thoughts on a KoaIsshin sword. 1. Pics of a work in progress, proving the blade is a true "rod in pipe" blade are very desirable and I would ask for such. 2. I told Jacky I would review the the Huawei wide suguha sword for SBG, so I had better get moving on that, to get that done, so I have credibility in asking for "in progress" pics on a KoaIsshin. 3. I am thinking of paying for the sword but if Jacky is interested in making more, to gauge interest, perhaps I could tell Jacky to post mine as an store item and see if it sells. If so, he could make me another or make whoever a new. If there is demand, Jacky might make more to have in his store inventory. All this supposes success in the making. Right now, pretty much everyone has the same stuff: mono folded sanmai kobuse ..... Maybe if the process is say..easier that folded and makes a superior blade, Jacky will make more as a standard item. Would also have the benefit of making Huawei have an "exclusive". RinC
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Post by Anankai on Oct 26, 2014 17:41:56 GMT
Do we have informations on what rod diameter and pipe gauge was used to make those KoaIsshin by Mantetsu?
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Post by Robert in California on Oct 26, 2014 19:37:46 GMT
"Do we have informations on what rod diameter and pipe gauge was used to make those KoaIsshin by Mantetsu?" ================================================ Good question...that would be very useful info to help Jackie...might save some failed experimenting.
Also, what steel to use for the rod? 1045 5160 9260? And the pipe? 1095? T10? Doubt it could be other than mono.
RinC
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Post by Onimusha on Oct 27, 2014 5:06:15 GMT
I don't think it would be beneficial to use a spring steel as the core, as that portion of the blade would not be spring tempered. As for the pipe, that's up to you. DH T10 has proven tougher than DH 1095.
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Mikeeman
Member
Small Business Operator
Posts: 2,904
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Post by Mikeeman on Oct 27, 2014 21:19:24 GMT
Ideally, the core would be the MOST springy part of the blade.
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