Kamisori help.

[Bear_Blade]

I thought I would try one out, so I had pictures sent from several people, thank you! And I blended aspects that I liked (at least as best I could see from pictures)
Have a look, and tell me what I am missing, or need to address... Thanks in advance.

 

[Firewalker]

Wow Bear! That sucker is menacing and industrial looking, good use of 90° and 45° angles. Is it a combo of metals as well?

 

[Mike H]

Can you post a picture of the profile.

Typical Kamisori profile looks like this (although, this is a folding blade)

The Ura side usually has the makers mark and the hollow beveled goes to the spine. The Omote side is flatter, but there is a slight hollow, and goes up 3/4 the way to the spine.

 

[Kentos]

Looks pretty good, but on one side the hollow should extend all the way from spine to bevel. Looks like both sides have the wedge grind.

 

[dpetrzelka]

Where do we get in line to try it out?

 

[Bear_Blade]

Here you go...

 

[Bear_Blade]

Looks pretty good, but on one side the hollow should extend all the way from spine to bevel. Looks like both sides have the wedge grind.

easy fix, stand by

 

[Bear_Blade]

Corrected

 

[Doc226]

I'm not a kamisori expert but it looks like it needs more "hollow" on both sides.

 

[gash]

For reference, here's my Henkotsu (not that you should copy it):

 

[oakeshott]

Bear,
I'm sending you the complete Star Trek series. Can you get to work on a transporter or a holodeck?

i have a Tosuke in Mint condition. Will try and get pics for you to use as reference. Not at home right now.

 

[Bear_Blade]

Readjusted the radius on my platten, is this better? Remember this is rough ground, and will be further thinned, and polished after HT.

 

[Kentos]

Looks better! Main thing is you have enough hollow to help with honing.

 

[life2short1971]

Yep i would leave that alone til after HT and then keep the same radius' thinning it down. Very nice.

 

[ANeat]

Very nice; Looks like you got some more goodies in the background there

Here you go...

View attachment 326611

 

[Tierdaen]

The revised shape is not bad. Right angles aren't really suited to kamisori aesthetics, so I'd angle the toe and heel slightly more. I'd also grind the "non-stamp" side just a bit more hollow for a longer easy-honing life.

 

[fast14riot]

Looking good! For reference, I always grind the URA side first, the full height hollow grind from edge to spine. Then I grind the omote side down to the pre HT edge thckness (~0.020 depending on steel). This is of course after profiling. One thing to watch out for is the edge being twisted compared to the spine, when you go to set your bevel later on it will show as the bevel being higher on one end than the other.

Checking sharpening geometry after HT when you get down to 0.010"- 0.005" edge thickness is important. Making sure it wil lay flat on a hone and isn't being kicked up by the grind on the handle end of the blade.


-Xander