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Post by Deleted on Mar 22, 2010 17:27:24 GMT
I have a tenchi and I want its edge to be as sharp as it can possibly get. Its a through-hardened blade so the steel has a reasonable hardness but not the kind of hardness a DH blade can have.
So I know there's a limit to how sharp I can get it. Nevertheless, the sharper, the better. I'm willing to invest time in it and I've retouched it before myself with sandpaper and a polishing agent meant for car paint.
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Post by sicheah on Mar 22, 2010 17:44:39 GMT
If I am not mistaken, the only difference between a TH and a DH (assume both blades are properly tempered) is the edge retention. As to sharpness, it really depends on a sharpener's skills.
I think you know that the sharper the edge, the more likely you need to resharpen the edge.
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Post by Deleted on Mar 22, 2010 17:49:45 GMT
you mean shaving sharp? maybe floating-in-the-air-leaf-cutting sharp ;D? seriously, if you basically wan't a laser scalpel like sharpness, then you need a lot of polishing/sharpening stones, a very good technique and much time (especially in your case, sharpening softer steel is a hellish suffering for me, one can screw everything up within a blink of an eye)
oh, and you may want to change the angle and geometry of the edge, cause cheness have Appleseed geometry. you must remove all the niku first. you must move the shinogi upper (maybe make it hira-zukuri?) but if you don't want to make it into hira-zukuri, than you must at least remove the niku....
oh, did I mention how much time it takes?
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slav
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Post by slav on Mar 22, 2010 18:34:38 GMT
A hybrid polish (a la Tom K.) should do the trick. Look it up and see what you can find...
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Post by Deleted on Mar 22, 2010 20:49:40 GMT
Don't forget that you really don't want your blade too sharp. From my experience, Cheness blades are more than sharp enough, in fact they're as sharp as any sword needs to be. Why do you want to sharpen it further?
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Post by Deleted on Mar 23, 2010 1:28:58 GMT
Don't forget that you really don't want your blade too sharp. From my experience, Cheness blades are more than sharp enough, in fact they're as sharp as any sword needs to be. Why do you want to sharpen it further? Didn't ask for the whys, only the hows ^^
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Post by Deleted on Mar 23, 2010 1:29:59 GMT
you mean shaving sharp? maybe floating-in-the-air-leaf-cutting sharp ;D? seriously, if you basically wan't a laser scalpel like sharpness, then you need a lot of polishing/sharpening stones, a very good technique and much time (especially in your case, sharpening softer steel is a hellish suffering for me, one can screw everything up within a blink of an eye) oh, and you may want to change the angle and geometry of the edge, cause cheness have Appleseed geometry. you must remove all the niku first. you must move the shinogi upper (maybe make it hira-zukuri?) but if you don't want to make it into hira-zukuri, than you must at least remove the niku.... oh, did I mention how much time it takes? Kinda like the niku but I understand the issue with attaining the sharpest edge possible. Maybe a hybrid polish is the way to got for now.
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Post by Deleted on Mar 23, 2010 4:53:14 GMT
Don't forget that you really don't want your blade too sharp. From my experience, Cheness blades are more than sharp enough, in fact they're as sharp as any sword needs to be. Why do you want to sharpen it further? Didn't ask for the whys, only the hows ^^ No, HE asked for the why's. If you want help, you might fair better in DISCUSSING the topic instead of demanding your answers.
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Post by Deleted on Mar 23, 2010 8:44:13 GMT
It IS possible to get a sword as sharp as a fresh shaving razor. People may tell you that you don't want it that sharp, but as long as you keep the appleseed shape, you can get it sharp enough to split atoms and it will be fine. As far as how to get it that sharp... lemme find it. *goes and looks* Ok, here it is: /index.cgi?board=general&action=display&thread=403&page=3#155365 Thats Tom, he's awesome. He also took the time to explain to newcomers like you and me, how to sharpen blades with both a stone and a belt grinder. There is also a video a little further down on that page where a katana he sharpened goes through a triple tatami mat like the thing wasn't even there... seriously I really wish that Tom's sharpening post could be stickied on this section of the forums because it's kinda hard to find. Personally I don't care to get my blades razor sharp. I get mine up to about paper cutting sharp before I loose patience and stop. But be prepared for some trial and error. I hope your experience is different then mine, but for me it took forever to figure out how to work my blade the best. After most sharpening sessions, the blade actually came out duller. I didn't have the angles right and I was pushing to hard on the blade which turned the apple seed edge geometry into more or less just an apple geometry. But stick with it man. And if you have a sword that you don't care as much about, I would STRONGLY suggest you practice sharpening it first. Even if it's a wall hanger. I have probably removed more metal from my blade then I ever should have, and it wouldn't surprise me if it was a couple ounces lighter.
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Post by Dan Davis on Mar 23, 2010 12:08:02 GMT
/index.cgi?board=general&action=display&thread=403&page=3#155365 I really wish that Tom's sharpening post could be stickied on this section of the forums because it's kinda hard to find. Yeah, me too. But he put it in the General Forum and unless the Mods move it to here I can't make it a sticky.
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Post by Deleted on Mar 23, 2010 17:44:46 GMT
If I want to reference that post I look for any other of Tom's posts as he has the link in his signature.
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Post by Deleted on Mar 23, 2010 19:31:16 GMT
wow, Tom's post was epic D: I'll try the techniques from that. I already got all the grits of sandpaper and even a leather belt and the correct type of compound to use >) just not the belt sander so I'll do what Tom did in his first two vids.
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Post by Deleted on Mar 23, 2010 20:27:42 GMT
I use Tom's method and its very effective. its quite time consuming and you have to be quite patient and just work away at it.
Just one word of warning, watch your fingers, if you do it right your sword is going to get very sharp and its easy to cut your fingers while sharpening.
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Post by Deleted on Mar 25, 2010 0:32:20 GMT
Didn't ask for the whys, only the hows ^^ No, HE asked for the why's. If you want help, you might fair better in DISCUSSING the topic instead of demanding your answers. Ditto. everyone seems not to care, but I sure won't give any info when demanded.
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Post by Deleted on Mar 25, 2010 19:19:15 GMT
I am discussing the topic. HOW to get the sharpest edge. Not why to get it or not wanting to get it.
Discuss methods only please.
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Post by Dan Davis on Mar 25, 2010 20:04:39 GMT
Greg has has answered your question; I see no reason to pursue this further. Thread locked.
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Post by Dan Davis on Mar 25, 2010 23:11:16 GMT
Further Note: Tom has reproduced his polishing thread for us and it is now a sticky in this forum.
Thanks again, Tom
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