|
Post by Lancelot Chan on Aug 16, 2020 16:50:22 GMT
There was a national treasure nihonto in Japan named 壓切長谷部, which was famous for cutting someone up just by pressing the blade on the person. Well, I sharpened my student's cold steel grosse messer to my standard of sharpness and gave this "press cut" a try.
|
|
pgandy
Moderator
Senior Forumite
Posts: 10,296
|
Post by pgandy on Aug 16, 2020 21:01:48 GMT
I've never seen that done before. Probably won't again. WOW!! 😵
|
|
|
Press cut
Aug 16, 2020 21:25:31 GMT
via mobile
Post by paulmuaddib on Aug 16, 2020 21:25:31 GMT
Impressive. Remind me to never get on the sharp edge of any sword you’ve sharpened. 😏
|
|
|
Post by Lancelot Chan on Aug 17, 2020 5:53:39 GMT
I've never seen that done before. Probably won't again. WOW!! 😵 HAhhahahah Thanks for your kind words. :D LOL!
|
|
|
Post by Lancelot Chan on Aug 17, 2020 5:54:26 GMT
Impressive. Remind me to never get on the sharp edge of any sword you’ve sharpened. 😏 LOL, Thanks a lot! You may actually like to use them after you tried it. :D
|
|
|
Press cut
Aug 17, 2020 15:40:45 GMT
via mobile
Post by paulmuaddib on Aug 17, 2020 15:40:45 GMT
Impressive. Remind me to never get on the sharp edge of any sword you’ve sharpened. 😏 LOL, Thanks a lot! You may actually like to use them after you tried it. Oh I’m sure I would love using any of your swords. I just wouldn’t like to be on the receiving end of them. Very cool cut though. Like pgandy said I’ve never seen that before.
|
|
|
Post by Lancelot Chan on Aug 17, 2020 16:31:21 GMT
LOL, Thanks a lot! You may actually like to use them after you tried it. :D Oh I’m sure I would love using any of your swords. I just wouldn’t like to be on the receiving end of them. Very cool cut though. Like pgandy said I’ve never seen that before. If one's to die by the sword, I guess the one will prefer to die by my sword for less painful process.
|
|
|
Press cut
Aug 17, 2020 18:25:07 GMT
via mobile
Post by paulmuaddib on Aug 17, 2020 18:25:07 GMT
Oh I’m sure I would love using any of your swords. I just wouldn’t like to be on the receiving end of them. Very cool cut though. Like pgandy said I’ve never seen that before. If one's to die by the sword, I guess the one will prefer to die by my sword for less painful process. True that! Would be quick. I hope. 😖😵
|
|
|
Post by alexkjren on Aug 18, 2020 14:03:18 GMT
That's very impressive! Do you have a tutorial of your sharpening methods?
|
|
|
Post by Lancelot Chan on Aug 18, 2020 16:31:02 GMT
That's very impressive! Do you have a tutorial of your sharpening methods? Thanks a lot. Yes I teach sharpening for a fee with a tutorial.
|
|
pgandy
Moderator
Senior Forumite
Posts: 10,296
|
Post by pgandy on Aug 18, 2020 17:29:40 GMT
Thanks a lot. Yes I teach sharpening for a fee with a tutorial. In the name of good will and international relations how about an free online tutorial? 😉
|
|
|
Post by Lancelot Chan on Aug 18, 2020 18:10:26 GMT
Thanks a lot. Yes I teach sharpening for a fee with a tutorial. In the name of good will and international relations how about an free online tutorial? 😉 :D If you manage to convince my landlord not to charge me rent for 1 month, I can do it. :D
|
|
pgandy
Moderator
Senior Forumite
Posts: 10,296
|
Post by pgandy on Aug 18, 2020 22:40:48 GMT
In the name of good will and international relations how about an free online tutorial? 😉 :D If you manage to convince my landlord not to charge me rent for 1 month, I can do it. :D Don't sweat the small stuff. 😁
|
|
|
Post by treeslicer on Aug 19, 2020 4:13:11 GMT
I see that you're in the forefront of cutting edge technology. Very impressive.
|
|
|
Post by Lancelot Chan on Aug 19, 2020 6:09:21 GMT
I see that you're in the forefront of cutting edge technology. Very impressive. Thanks a lot. :D I use a relatively simplistic technique to sharpen since most of the sharpening I did were on long swords.... have to keep it simple and stupid since so much length to do.
|
|
|
Post by Lancelot Chan on Aug 19, 2020 6:14:57 GMT
:D If you manage to convince my landlord not to charge me rent for 1 month, I can do it. :D Don't sweat the small stuff. 😁 I can give you some tips. I do 10 degree per side as long as the blade thickness allowed way up to 8000 grit (extra extra fine). Then switch 30 to 35 degree per side at extra fine grit for deburring (yes, stepping down 1 grit), which also create an invisible micro bevel for stabilizing the edge. Stepping down 1 grit is because I want the edge to have some serration, as well as most sword steels just couldn't hold a 8000 grit apex, unless that steel is over 62 HRC. After that I use a block of rock hard felt charged with the steel dust from the sharpening to test the edge. If the edge rolled against such slicing, the micro bevel needs to be bigger. If it holds, it's gonna hold against hard target as long as one's blade alignment is good. That's it. I don't use paste, strop or what. All diamonds.
|
|
|
Post by Lancelot Chan on Aug 19, 2020 11:43:48 GMT
Longship Custom Silvia press cut on free standing paper
|
|
|
Post by Lancelot Chan on Aug 19, 2020 11:52:25 GMT
Neighborhood sword hira zukuri nodachi press cut
|
|
pgandy
Moderator
Senior Forumite
Posts: 10,296
|
Post by pgandy on Aug 19, 2020 13:08:48 GMT
Don't sweat the small stuff. 😁 I can give you some tips. Thanks very much, but my previous posts were made in jest, I wasn’t trying to steal your secrets. Where you start at 10° thickness permitting I do so at 15°, the limit of my sander. You had told me earlier about your final 30-35° polish. Again my sander limits me to 30°, but over time I’ve chosen 25° as a general setting. I’ve found there is a difference in performance with a higher polished blade so the final polish is with metal polish with a leather strop. Unfortunately my swords for the most part lack a good HRC number with 50 being a good representation. So I try to hit a happy median of performance and survivability. My weapon/tools such as the puniti and machetes will go 60 and above. Again I wasn’t really trying to steal your trade secrets but the info is appreciated. That's a problem with the Internet, it's hard to know when someone is serious or not. I had attached smiley faces in hopes that you knew I was joking. Have a good day.
|
|
|
Post by illustry on Aug 19, 2020 13:38:53 GMT
Hi Lancelot Chan I think a core concept of yours, from this and your other posts I have read, is you go for an acute angle as far out as the edge supports it, but from there, which could possibly be the very apex, switch to a more obtuse angle. This would be to try to get the best of both worlds, slicing vs hardiness. Not to oversimplify of course, as you optimize further (ex, micro-serrations). You are the man when it comes to cutting!
|
|