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Post by Deleted on Sept 11, 2008 21:42:16 GMT
This is something I was thinking about and would like to know if there is a safe way to accomplish this task. Tsuba is IRON!! ------------------------------------------------------------- The Tsuba set I have has an inner diameter of {1.20" long X 5/8" wide} ! My Iaito accepts a {1" long x 1/4" wide} Tsuba. ------------------------------------------------------------- It there a safe way to use the larger inner diameter tsuka? ? I'm about to send the Tsuka set back for a refund, but would like to know if I have any options. Thanks
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Post by Deleted on Sept 11, 2008 23:33:41 GMT
There are two ways.
Peen around the Nakago-ana. Take a ball-peen hammer, and use the round end to strike arounf the perimiter of the hole. This will shrink the opening slightly, you may have to file a little bit.
Your other option is to add copper pieces. Seen on many Tsuba, they are there to make filing to size easier for the buyer. I suggest against it, unless you know what you're doing.
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Post by Deleted on Sept 12, 2008 0:09:19 GMT
Thank you for taking the time to respond to my question, The Virtual Steven Seagal.
Using a ball-peen hammer would seem like the logical choice, but it does raise the possibility of cracking the IRON tsuba.
The nakago ana is 1/4" thick - Is cracking a possibility ??
Thanks
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Post by Deleted on Sept 12, 2008 1:45:54 GMT
You've got me all screwed up here.
The Nakago-ana(literally: Tang-hole) is the hole the tang slides through. You initially claimed it's 5/8" WIDE. The Nakago(tang) is 1/4" thick, so you say.
Looking back at your numbers, I have a serious issue.
What Tsuba is this? Where did you order it from? 5/8" wide Nakago-ana? That's over half an inch. NO swors is half an inch thick. This leads me to believe that the Tsuba you have is either a piece of crap not meant to be mounted, or has been abused by past owners.
I seriously need to see a picture of this thing. Something sounds seriously wrong, and you may indeed be better off getting your money back on this purchase. Post a photo of the Tsuba, and please tell us from where it was purchased.
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Post by Deleted on Sept 12, 2008 2:46:01 GMT
5/16" was what I meant to put there. The old tsuba was punched in the center of the nakago-ana to make a tight fit. So, that is most likely the way to go. SORRY!! My measurements were off its really a 1\16" difference, so I won't have to really punch-in that deep, just enough to get a tight fit. Here's a picture of the tsuba - Compliments of SwordsofMight Handmade Iron tsuba 18K gold and silver details Tsuba displays Osprey in flight motif Two Osprey menuki 1 Osprey koiguchi 1 Kashira Great for the total cusomization of your katana These sets are completely handmade and are in limited quantities!
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Post by Deleted on Sept 12, 2008 3:33:30 GMT
There are two ways. Peen around the Nakago-ana. Take a ball-peen hammer, and use the round end to strike arounf the perimiter of the hole. This will shrink the opening slightly, you may have to file a little bit. Your other option is to add copper pieces. Seen on many Tsuba, they are there to make filing to size easier for the buyer. I suggest against it, unless you know what you're doing. I've never used a ball peen hammer. I have however used a drift/punch and a good 2lb hammer. I use the heavier hammer so I can tap less forcefully (read: more control), and still drive the punch in. Make sure you measure all four sides carefully, and if it's loose in any direction, do BOTH sides with equal force in that plane. So if the ha to mune is loose, you'd peen the top and bottom. If the sides are loose, you'd do the same side to side. You can also peen the corners. The point is symmetry. You also do this with the blade removed by the way. Once done with the peening, you slide your nakago in. It will likely be tight. VERY carefully with a flat jeweler's file, file down each side where the nakago touched. File LESS than you think you'll need for a smooth fit. Retry the nakago. Rinse/repeat. You want some interferance on your fit, so when you get within 1/4" of the tsuba being driven all the way home to the seppa/habaki...tap it lightly hpme with a wooden mallet, or a wooden stake and a light hammer. Voila, perfectly fit tsuba! Cris
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Post by Deleted on Sept 12, 2008 7:36:45 GMT
Where did you buy this tsuba from?
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Post by Deleted on Sept 12, 2008 10:02:11 GMT
I allways had trouble with Nakago Anas of Tsubas and there are many ways to solve this problem. Some are elegant others are not, bur hey they work. Hammering is one of the most elegant was and will certainly work, but needs a little amaount of know how. Sometimes I cut and glue wood shims into the ana, making it smaller. Not the best way, but I had no problems with that. What you could do, too, is insert little copper or lead shims. You could take the weight of a fishing rod, it is made of extremely ductile material, and can be hammered into place with ease. Afterwards it needs a little filing and you have a perfect fit, too. What you could do, also is glue/cold-weld it on. There are two ways, again. One that permanently fits the Tsuba to the tang, and one where it can be taken off for maintenance, again. I heard good things of JB-Weld. We should make a sticky with some of this informations drawn together, because these questions appear alot, and I myself like to reconsider all of them from time to time. btw. you should not have problems with your tsuba cracking. the one thing that could happen is that it will be loose and rattle around as long as there is no space between the seppa and tsuba btw SpeaKtree the picture has "swords of might" written all over it, he possibly got it from there
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Post by Deleted on Sept 12, 2008 16:01:05 GMT
lol. I can't help but thing the "handmade" is a bit of a... well... I can't think of a term stronger than bullsemprini.
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Post by Deleted on Sept 12, 2008 18:57:29 GMT
Thank you all for the very informative replies. I think I will try shrinking the nakago Ana via the ball-hammer and build-up a consistant inner-wall with jbweld or some simular liquid metal.
Thanks Again Guys,
And topics like this should be a sticky .... Because I found out that it is very common to have a over\under sized Nakago Ana on tsuka's. Since there is no standard size that will fit all tangs.
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Post by Deleted on Sept 12, 2008 20:06:46 GMT
The inner way doesn't necessarily need to be consistent. In fact, I've seen Tsuba on several antiques where the peen is only in four places.
The way I did the custom mini-Tsuba for my O-Katana was like that. I took a pointed punch, and hammered four divots into the steel near the perimiter on each side. This pinched in the Nakago-Ana enough to make an INCREDIBLY secure fit.
Admittedly, this is usually done on softer metal Tsuba. Steel and iron do fun the risk of scratching the Nakago(not a huge issue on cheap swords, though). Just peen a couple spots. There's no need for JBWeld. Though, personally, I try my best to stick to historical methods and materials when modern ones won't make a difference for the better(such as this situation).
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