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Post by wiwingti on May 1, 2009 16:03:07 GMT
why not use sand paper? i do it to sharpen and to dull a blade and it work. File is way faster. yeah file is faster , i was suggesting the guy the lower cost way to do it. it is not everyone who have a file.
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Post by Deleted on May 1, 2009 17:56:59 GMT
I would never use a file on a katana blade ( except to take the edge OFF!)
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Post by Deleted on May 1, 2009 18:18:24 GMT
uncreative, have you tried to polish out the scratches with uchiko & choji?
i tried putting a thin dowel in a mat today, i got what looked like a nasty scratch, but it disappeared during cleanup....
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Post by Deleted on May 1, 2009 20:04:36 GMT
uncreative, have you tried to polish out the scratches with uchiko & choji? i tried putting a thin dowel in a mat today, i got what looked like a nasty scratch, but it disappeared during cleanup.... Someone told me a full kit was not needed, that some old t-shirts or coffee filters and mineral oil was what I needed. I think, with some alcohol (I suppose I can't use acids as e.g white sprite for cleaning high carbon steel even if I wash it well and re-oil it afterwards?), I can get the stains off, but don't I need some metal glo or to polish the blade for scratches, actual imprints in the metal, to go away? Anyhow, I'll buy some finer sand paper when I get the chance, one 800 grit, one 1-1200 grit and one a little higher should be enough, right? Then I can just wet the sandpaper, use the sand papers in an ascending order, in a similar fashion to how the guy with the rouge sharpening did it in the youtube film?
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Post by Deleted on May 1, 2009 23:50:14 GMT
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Post by Deleted on May 2, 2009 9:57:39 GMT
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Post by Deleted on May 2, 2009 12:29:39 GMT
and if you have a belt sander...
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Post by Deleted on Jun 9, 2009 17:21:24 GMT
A late thanks, Kenpachi. I'm just in the process of disassembling it for the first time, pretty fascinated with the whole itomaki thing, but I'm having some problems. I've taken out the single pin, and tried both using the Hyoujinsama method (taking out the pin then holding the sword in one hand and bashing your hand with the other - I've given it a dozen or so hits, but no success) and the regular putting your katana on a surface with the tsuba off the edge and using a splint and hammer to loosen the seppa. I've been giving it some taps for quite some time now, and the upper seppa, tsuba and habaki are very loose at the very least. However I can't get the handle off it seems. Anyone know if DF used glue or something? Any tips?
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Post by Deleted on Jun 9, 2009 17:32:03 GMT
Start bashing it like the fist of the north star. No, seriously, this is the only thing that helped me, the musha is put together a bit too well. First of all, to get the tsuka off without damage- Get another person to hold the tsuba by it's "ears", get a grip, and pull the tsuka with all your might. be careful not to fall backwards when you get it loose. after that, use a rubber mallet to tap on the tsuba from all directions to take it off (3 taps from 1 side, turn 90 degrees, 3 taps again, repeat. don't be too gentle, give it a hit.) after you got that loose, the habaki is the most trouble some part. If not needed, don't remove it. If you still want to, carefully tap the sides, where there's a space between the habaki and the bo-hi. When you get it to drop a little, pull. Don't use plyers or anything, fingers only.
After you're done with the ordeal, i suggest sanding the back of the nakago a bit, it'll be a hell of a lot easier to deal with everything next time.
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Post by Deleted on Jun 9, 2009 17:37:10 GMT
Thanks, +1, it's okay to use a pretty rough grit on the tang, aye?
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Post by Deleted on Jun 9, 2009 18:07:16 GMT
I won't suggest going below 800, or 400 if you just want to get it over with asap. do a LITTLE sanding, and check the fit. you don't want to sand too much. I used 1200 grit.
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Post by Deleted on Jun 9, 2009 19:42:15 GMT
Oh, that's pretty high. I've heard of people hybrid polishing blades and beginning with 200 grit so I though a 100ish grit would be okay for a rough tang, guess I was way off.
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Post by Deleted on Jun 9, 2009 20:01:12 GMT
100 grit is ROUGH. You don't need to sand that much, just touch things up. Don't risk screwing up your nakago, it will mean the tsuka becomes a bit loose, and possibly a rattling tsuba+seppa as well. Better to buy 800-1200 grit papers and do a good job on it. It will take more time, but you'll be able to get EXACTLY the result you want, not "almost".
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Post by Deleted on Jun 9, 2009 20:11:46 GMT
If you're having problems removing the tsuka, try this. Leave the saya on, sit on the floor, and brace your feet on the tsuba. Then pull on the tsuka. You get good leverage and even pressure on the whole tsuka. When you use a mallet and bang on the tsuba, you put more pressure on one side, which can cause cracks. If you try this though, keep the saya ON the blade. And wear sneakers
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Post by Deleted on Jun 9, 2009 20:44:12 GMT
That will shoot the blade with the saya to the opposite side. I don't recommend on doing this, unless the other end is very close to a wall, and you prepare massive amounts of padding to prevent any damage.
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Post by Deleted on Jun 9, 2009 21:10:32 GMT
You're not actually pushing on the blade. The tsuba is still against the seppa and habaki, which is still braced in the mouth of the saya, which is still up against the tsuba. I've had to do it a few times with really stubborn tsuka, and I was worried at first that the tsuka was gonna fly off and the sword go in the opposite direction, but it hasn't ever happened for me. Once you get the tsuka loose, you don't need to keep pushing with your legs. edit: I should've had this in my first post, but don't use full force with your legs. If you slowly build up, you'll eventually get it loose, without an explosion of sword and saya shooting out of your legs. This is just the easiest way I've found to get stubborn tsuka off, it works for me, just thought I'd suggest it.
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Post by Deleted on Jun 9, 2009 21:28:54 GMT
I did exactly that Secosera since I lacked the extra hands pika mentioned, with no troubles.
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Post by Deleted on Jun 9, 2009 21:40:49 GMT
It sounds ridiculous (and looks hilarious) but if you take it slow, it works great.
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